https://justrunmy.app/guides Practical deployment guides for bots, AI agents, APIs, and side projects.en Wed, 21 Oct 2026 09:00:00 GMT https://justrunmy.app/guides/agent-loop-stop-conditionhttps://justrunmy.app/guides/agent-loop-stop-conditionSat, 08 Aug 2026 09:00:00 GMTAn agent decides for itself when it's finished, and sometimes it never does. Four limits stop a tool loop costing you money and getting OOM-killed.ai-agentsllmreliabilitycostmemoryarchitecture https://justrunmy.app/guides/ai-app-assumes-one-userhttps://justrunmy.app/guides/ai-app-assumes-one-userSat, 08 Aug 2026 09:00:00 GMTGenerated code keeps per-user state in module-level globals. One container means every visitor shares them, so the usual symptom is seeing someone else's data.vibe-codingaiconcurrencysecuritysqlitearchitecture https://justrunmy.app/guides/ai-app-database-assumptionshttps://justrunmy.app/guides/ai-app-database-assumptionsSat, 08 Aug 2026 09:00:00 GMTModels make one of three database assumptions, and all three break on a container platform. Fixing them takes minutes if you know which one you've got.databasesvibe-codingaipostgressqlitevolumes https://justrunmy.app/guides/ai-generated-app-security-reviewhttps://justrunmy.app/guides/ai-generated-app-security-reviewSat, 08 Aug 2026 09:00:00 GMTModels write for the happy path on a machine only you can reach. Once deployed, that code is your entire defence. Six things to check, each a two-minute grep.securityvibe-codingaireviewdeployment https://justrunmy.app/guides/background-work-in-the-same-apphttps://justrunmy.app/guides/background-work-in-the-same-appSat, 08 Aug 2026 09:00:00 GMTYou don't need a second app for a scheduled job. One process with a background task is simpler — and here it's often the only option that shares your data.workersschedulingarchitecturevolumes https://justrunmy.app/guides/bot-conversation-memoryhttps://justrunmy.app/guides/bot-conversation-memorySat, 08 Aug 2026 09:00:00 GMTPer-user or per-channel isn't a storage detail. It decides who sees whose messages, what each reply costs, and how fast your disk fills up.llmbotsmemoryvolumesprivacyarchitecture https://justrunmy.app/guides/bot-guild-join-onboardinghttps://justrunmy.app/guides/bot-guild-join-onboardingSat, 08 Aug 2026 09:00:00 GMTGuild Create fires in three cases and only one is a real join. Telling them apart needs storage that survives a deploy — which is why the bug exists.discordbotsonboardingvolumesrate-limits https://justrunmy.app/guides/bots-replying-to-botshttps://justrunmy.app/guides/bots-replying-to-botsSat, 08 Aug 2026 09:00:00 GMTTelegram forbids bots seeing each other precisely to avoid this. Discord doesn't, so the check is yours — and with a model behind it, each lap is billable.discordtelegrambotsllmreliability https://justrunmy.app/guides/changing-a-prompt-in-productionhttps://justrunmy.app/guides/changing-a-prompt-in-productionSat, 08 Aug 2026 09:00:00 GMTA prompt is the least protected code in your app — no type check, no test, and failures look like slightly worse answers. Version it and gate it on evals.llmai-agentsevalsdeploymentcostoperations https://justrunmy.app/guides/deploy-ai-app-no-codinghttps://justrunmy.app/guides/deploy-ai-app-no-codingSat, 08 Aug 2026 09:00:00 GMTZip the folder, drop it in, answer a question about your API key. Here's what actually happens, what it can't do, and the three things that surprise people.vibe-codingaibeginnersziphow-to https://justrunmy.app/guides/deploy-ai-built-nextjs-apphttps://justrunmy.app/guides/deploy-ai-built-nextjs-appSat, 08 Aug 2026 09:00:00 GMTv0, Lovable and Bolt all output Next.js. The build is what fails first, and NEXT_PUBLIC_ variables set on the app never reach the browser. Here's why.nextjsvibe-codingaidockerdeploymenthow-to https://justrunmy.app/guides/deploy-ai-monorepo-frontend-backendhttps://justrunmy.app/guides/deploy-ai-monorepo-frontend-backendSat, 08 Aug 2026 09:00:00 GMTAI tools output frontend/ and backend/ folders, but the build only reads a Dockerfile at the root. Three ways to resolve that, and when one app beats two.monorepovibe-codingaidockerdeploymentcors https://justrunmy.app/guides/deploy-phoenix-single-nodehttps://justrunmy.app/guides/deploy-phoenix-single-nodeSat, 08 Aug 2026 09:00:00 GMTThe BEAM is a great fit for a small container. The one thing you can't have is clustering, and most Phoenix apps don't miss it as much as you'd expect.elixirphoenixliveviewbeamdeploymenthow-to https://justrunmy.app/guides/deploy-rails-no-web-serverhttps://justrunmy.app/guides/deploy-rails-no-web-serverSat, 08 Aug 2026 09:00:00 GMTRails expects nginx to exist and a master key to be on disk. Neither is true in a container here, and both failures look nothing like their cause.rubyrailspumadeploymentassetshow-to https://justrunmy.app/guides/deploy-rust-api-build-not-runtimehttps://justrunmy.app/guides/deploy-rust-api-build-not-runtimeSat, 08 Aug 2026 09:00:00 GMTA Rust binary is close to the perfect container workload. Getting one compiled inside a small build container is the part nobody warns you about.rustaxumtokiodockerbuilddeployment https://justrunmy.app/guides/deploy-vite-react-spahttps://justrunmy.app/guides/deploy-vite-react-spaSat, 08 Aug 2026 09:00:00 GMTA Vite build is static files, so two things break: refreshing a route 404s, and VITE_ variables are frozen at build time. Both have clean fixes.vitereactspanginxvibe-codingdeployment https://justrunmy.app/guides/deployment-requirements-prompthttps://justrunmy.app/guides/deployment-requirements-promptSat, 08 Aug 2026 09:00:00 GMTModels write for localhost because that's the only target they're given. Paste these constraints into your prompt and most deploy-day failures never happen.aivibe-codingpromptingdeploymentdocker https://justrunmy.app/guides/designing-mcp-tools-for-modelshttps://justrunmy.app/guides/designing-mcp-tools-for-modelsSat, 08 Aug 2026 09:00:00 GMTTool descriptions are documentation and prompt at once. The biggest lever is what a failure says — an error that explains itself turns a dead end into a retry.mcpai-agentsapi-designtools https://justrunmy.app/guides/discord-attachment-urls-expirehttps://justrunmy.app/guides/discord-attachment-urls-expireSat, 08 Aug 2026 09:00:00 GMTCDN links are signed and time-limited, so a bot that saves them serves dead images later. Three fixes, and one that costs nothing at all.discordbotsattachmentsstoragetroubleshooting https://justrunmy.app/guides/discord-bot-missing-permissionshttps://justrunmy.app/guides/discord-bot-missing-permissionsSat, 08 Aug 2026 09:00:00 GMTThe bot has the permission and still can't use it. Usually a channel overwrite, or a role hierarchy rule that no permission flag can override.discordbotspermissionstroubleshootinghow-to https://justrunmy.app/guides/discord-buttons-after-restarthttps://justrunmy.app/guides/discord-buttons-after-restartSat, 08 Aug 2026 09:00:00 GMTA button posted last month still renders and still fires. Your container doesn't remember it. Put the state in the custom_id, which gets you 100 characters.discordbotsinteractionsvolumesarchitecturehow-to https://justrunmy.app/guides/discord-interaction-15-minute-windowhttps://justrunmy.app/guides/discord-interaction-15-minute-windowSat, 08 Aug 2026 09:00:00 GMTDeferring buys you time, not unlimited time. Tokens last 15 minutes, there are two kinds of deferral, and a redeploy mid-task leaves a spinner forever.discordbotsinteractionscomponentsllm https://justrunmy.app/guides/discord-rate-limits-invalid-requestshttps://justrunmy.app/guides/discord-rate-limits-invalid-requestsSat, 08 Aug 2026 09:00:00 GMT50 requests a second is easy to respect. The limit that bites is 10,000 invalid requests per 10 minutes, and a 403 in a loop counts toward it.discordbotsrate-limitstroubleshootingreliability https://justrunmy.app/guides/disk-full-every-app-stopshttps://justrunmy.app/guides/disk-full-every-app-stopsSat, 08 Aug 2026 09:00:00 GMTDisk is the one resource you don't allocate — it's measured from what you actually wrote. Go over the account limit and nothing restarts until you're under it.volumesdiskquotastroubleshootingoperationsstorage https://justrunmy.app/guides/do-i-need-to-shard-my-discord-bothttps://justrunmy.app/guides/do-i-need-to-shard-my-discord-botSat, 08 Aug 2026 09:00:00 GMTSharding is required at 2500 guilds and helps far less than people expect below that. And the way you shard matters more than whether you do.discordbotsshardingscalingmemory https://justrunmy.app/guides/does-anyone-use-my-bothttps://justrunmy.app/guides/does-anyone-use-my-botSat, 08 Aug 2026 09:00:00 GMTLogs rotate and memory resets on every deploy, so neither can answer it. Twenty lines and a table on a volume can — if you store rollups, not events.botsanalyticsvolumesobservability https://justrunmy.app/guides/evals-for-a-small-ai-apphttps://justrunmy.app/guides/evals-for-a-small-ai-appSat, 08 Aug 2026 09:00:00 GMTYou can't tell from one example. A file of test cases and a script catches regressions — and it belongs in CI, not on the container you're paying for.llmevalstestingci-cdai-agents https://justrunmy.app/guides/file-uploads-in-a-containerhttps://justrunmy.app/guides/file-uploads-in-a-containerSat, 08 Aug 2026 09:00:00 GMTGenerated code saves uploads next to the app, where they vanish on deploy. Two real options, and the disk limit that stops every app when uploads grow.uploadsvolumesstoragevibe-codingarchitecture https://justrunmy.app/guides/host-your-own-mcp-serverhttps://justrunmy.app/guides/host-your-own-mcp-serverSat, 08 Aug 2026 09:00:00 GMTOnly Streamable HTTP servers can be hosted; stdio ones run locally by definition. The gotchas are binding, Origin validation, and sessions dying on redeploy.mcpai-agentsstreamable-httphostinghow-to https://justrunmy.app/guides/hosting-something-only-you-can-reachhttps://justrunmy.app/guides/hosting-something-only-you-can-reachSat, 08 Aug 2026 09:00:00 GMTThere's no private or internal-only option — every port binding is public from the moment your app starts. Three real approaches, and the best often opens no port.securityinternal-toolsbotsnetworkingself-hosted https://justrunmy.app/guides/llm-api-timeouts-and-retrieshttps://justrunmy.app/guides/llm-api-timeouts-and-retriesSat, 08 Aug 2026 09:00:00 GMTThe SDK default is a 10-minute timeout retried twice. One stuck request can hold a worker for half an hour, and nothing on the platform notices.llmai-agentsreliabilityoperationsopenai https://justrunmy.app/guides/llm-bot-reply-too-longhttps://justrunmy.app/guides/llm-bot-reply-too-longSat, 08 Aug 2026 09:00:00 GMTModel output doesn't respect a 2,000-character cap. Splitting naively breaks code blocks, and editing on every token is how you collect rate limits.discordbotsllmai-agentstroubleshooting https://justrunmy.app/guides/logged-out-on-every-deployhttps://justrunmy.app/guides/logged-out-on-every-deploySat, 08 Aug 2026 09:00:00 GMTTwo causes, both common in generated auth code — sessions kept in memory, or a signing secret regenerated at startup. Neither looks like a bug locally.authsessionsvibe-codingdeploymentsecurity https://justrunmy.app/guides/logs-your-agent-can-debughttps://justrunmy.app/guides/logs-your-agent-can-debugSat, 08 Aug 2026 09:00:00 GMTAn agent reading your logs has no memory of your architecture and a limited window. Small changes make the difference between a diagnosis and a guess.loggingai-agentsobservabilitymcpdebugging https://justrunmy.app/guides/maintaining-an-app-you-didnt-writehttps://justrunmy.app/guides/maintaining-an-app-you-didnt-writeSat, 08 Aug 2026 09:00:00 GMTThe risk isn't bad code — it's that nobody holds a model of it. Four cheap habits, and one that matters because every deploy rebuilds your image.vibe-codingaimaintenancedependenciesoperations https://justrunmy.app/guides/memory-leak-in-a-long-running-apphttps://justrunmy.app/guides/memory-leak-in-a-long-running-appSat, 08 Aug 2026 09:00:00 GMTA hard RAM cap turns a slow leak into a clock. Exit code 137, a sawtooth pattern, and the pragmatic fix people don't like admitting works.memoryoomworkerstroubleshootingperformance https://justrunmy.app/guides/move-from-railway-what-mapshttps://justrunmy.app/guides/move-from-railway-what-mapsSat, 08 Aug 2026 09:00:00 GMTMove a Railway service to JustRunMy.App. Check private networking, reference variables, Railpack builds, cron jobs and replicas before switching traffic.migrationrailwaydeploymentarchitecturehow-to https://justrunmy.app/guides/one-smoke-test-before-deployhttps://justrunmy.app/guides/one-smoke-test-before-deploySat, 08 Aug 2026 09:00:00 GMTAI tools write features, not tests. You don't need coverage — you need one check that boots the app the way the container will and proves it answers.testingci-cdvibe-codingaideployment https://justrunmy.app/guides/private-dependencies-in-a-buildhttps://justrunmy.app/guides/private-dependencies-in-a-buildSat, 08 Aug 2026 09:00:00 GMTNo build args, no registry credentials, no BuildKit secret mounts. Three ways to get a private package into your image, and the one that actually scales.dockerbuildsecretsdeploy-pathshow-to https://justrunmy.app/guides/prompt-injection-in-a-chat-bothttps://justrunmy.app/guides/prompt-injection-in-a-chat-botSat, 08 Aug 2026 09:00:00 GMTIf a stranger's message reaches your model, they can instruct it. The fix isn't a better system prompt — it's limiting what the model is allowed to do.securityllmdiscordbotsprompt-injection https://justrunmy.app/guides/push-to-build-branchhttps://justrunmy.app/guides/push-to-build-branchSat, 08 Aug 2026 09:00:00 GMTTwo branches are tracked, not one. `deploy` builds and replaces your container; `build` only builds — which is what you want while you're still iterating.gitdeploymentci-cdworkflowai-agents https://justrunmy.app/guides/rag-on-a-small-containerhttps://justrunmy.app/guides/rag-on-a-small-containerSat, 08 Aug 2026 09:00:00 GMTCalling an embedding API is cheap and fits fine. Running an embedding model doesn't — and rebuilding your index at startup means paying for it every deploy.ragllmembeddingssqliteai-agents https://justrunmy.app/guides/rate-limit-your-llm-endpointhttps://justrunmy.app/guides/rate-limit-your-llm-endpointSat, 08 Aug 2026 09:00:00 GMTAn endpoint that calls a model turns traffic into spend, and no hosting setting can cap it. Three layers of defence — and the one that resets on deploy.llmrate-limitingcostsecurityai-agents https://justrunmy.app/guides/receiving-email-in-your-apphttps://justrunmy.app/guides/receiving-email-in-your-appSat, 08 Aug 2026 09:00:00 GMTMail delivery needs port 25, and TCP endpoints get a high port number instead. Two options actually work, and one of them fits a small container perfectly.emailwebhooksimaparchitecturehow-toworkers https://justrunmy.app/guides/reliable-json-from-a-modelhttps://justrunmy.app/guides/reliable-json-from-a-modelSat, 08 Aug 2026 09:00:00 GMTTwo failure modes, and only one is malformed syntax. Validate in code, feed the error back once, and cap the retries — because each one is billed.llmjsonvalidationreliabilityai-agents https://justrunmy.app/guides/restricting-who-can-use-bot-commandshttps://justrunmy.app/guides/restricting-who-can-use-bot-commandsSat, 08 Aug 2026 09:00:00 GMTDiscord's default_member_permissions is a default, not a boundary — admins bypass it and server owners can change it. The real check belongs in your handler.discordtelegrambotssecuritypermissionshow-to https://justrunmy.app/guides/search-without-elasticsearchhttps://justrunmy.app/guides/search-without-elasticsearchSat, 08 Aug 2026 09:00:00 GMTFull-text search ships inside SQLite. No second container, no network hop, no service to run — and on one container that's three structural problems avoided.sqlitesearchdatabasesarchitecturevolumesperformance https://justrunmy.app/guides/self-host-giteahttps://justrunmy.app/guides/self-host-giteaSat, 08 Aug 2026 09:00:00 GMTThe built-in git remote is push-only and exists to build your app. If you want somewhere to actually keep repositories, run your own Gitea in one container.giteagitself-hosteddockerhow-to https://justrunmy.app/guides/self-host-vaultwardenhttps://justrunmy.app/guides/self-host-vaultwardenSat, 08 Aug 2026 09:00:00 GMTVaultwarden runs comfortably in a small container. The hosting is the easy part — no snapshots exist, so losing the volume means losing the vault.self-hostedvaultwardensecurityvolumesbackupshttps https://justrunmy.app/guides/sending-email-from-your-apphttps://justrunmy.app/guides/sending-email-from-your-appSat, 08 Aug 2026 09:00:00 GMTYour app's generated hostname isn't a domain you control, so you can't authenticate mail from it. That decides the architecture before anything else does.emailsmtpdeliverabilityarchitecturehow-to https://justrunmy.app/guides/sending-images-to-a-modelhttps://justrunmy.app/guides/sending-images-to-a-modelSat, 08 Aug 2026 09:00:00 GMTThe API accepts a 512 MB payload. Your container has 0.25 GB. Base64 adds a third on top, and you hold the original and the copy at the same time.llmai-agentsmemoryuploadscostarchitecture https://justrunmy.app/guides/sending-webhooks-reliablyhttps://justrunmy.app/guides/sending-webhooks-reliablySat, 08 Aug 2026 09:00:00 GMTSigning, timeouts, backoff and idempotency are the usual list. The one nobody mentions — your retry queue has to survive being replaced mid-delivery.webhooksintegrationsreliabilityarchitecture https://justrunmy.app/guides/should-your-llm-bot-read-everythinghttps://justrunmy.app/guides/should-your-llm-bot-read-everythingSat, 08 Aug 2026 09:00:00 GMTBoth platforms restrict message visibility by default. For a model-backed bot that default is a feature — it caps your cost, your risk, and your storage.llmbotsdiscordtelegramprivacyarchitecture https://justrunmy.app/guides/slash-commands-not-showing-uphttps://justrunmy.app/guides/slash-commands-not-showing-upSat, 08 Aug 2026 09:00:00 GMTUsually the invite is missing a scope, or you registered globally and expected instant results. And registering on every boot has a limit you can hit.discordbotsslash-commandstroubleshootinghow-to https://justrunmy.app/guides/storing-user-api-keys-byokhttps://justrunmy.app/guides/storing-user-api-keys-byokSat, 08 Aug 2026 09:00:00 GMTEnvironment variables hold your app's secrets, not your users'. Per-user keys need encrypted storage — and the first question is whether to store them at all.ai-agentssecuritysecretsvolumesarchitecturellm https://justrunmy.app/guides/streaming-llm-responses-ssehttps://justrunmy.app/guides/streaming-llm-responses-sseSat, 08 Aug 2026 09:00:00 GMTTokens appearing one by one is mostly four details — flush every chunk, send heartbeats, cancel on disconnect, and expect a deploy to cut the stream.ssestreamingllmai-agentshttp https://justrunmy.app/guides/surviving-a-traffic-spikehttps://justrunmy.app/guides/surviving-a-traffic-spikeSat, 08 Aug 2026 09:00:00 GMTYou can't scale out, so the advice is different. Cache hard, make the common path cheap, and whatever you do, don't deploy in the middle of it.performancecachingscalingoperations https://justrunmy.app/guides/switching-models-without-a-rewritehttps://justrunmy.app/guides/switching-models-without-a-rewriteSat, 08 Aug 2026 09:00:00 GMTOne seam makes it a config change and a restart. Without it, model choice is scattered through your code — and the cheaper model isn't always cheaper.llmai-agentsarchitectureevalscost https://justrunmy.app/guides/telegram-bot-broadcast-rate-limitshttps://justrunmy.app/guides/telegram-bot-broadcast-rate-limitsSat, 08 Aug 2026 09:00:00 GMTTelegram caps bulk sends at about 30 messages a second and suggests spreading them over 8-12 hours. That makes a broadcast a resumable job, not a loop.telegrambotsrate-limitsvolumesbackground-jobshow-to https://justrunmy.app/guides/telegram-bot-privacy-modehttps://justrunmy.app/guides/telegram-bot-privacy-modeSat, 08 Aug 2026 09:00:00 GMTIt replies fine in DMs and goes silent in groups. That's the default, not a bug — and toggling it does nothing until you re-add the bot to the group.telegrambotsprivacy-modetroubleshootinghow-to https://justrunmy.app/guides/telegram-callback-query-spinnerhttps://justrunmy.app/guides/telegram-callback-query-spinnerSat, 08 Aug 2026 09:00:00 GMTThe client shows a progress bar until you answer the callback query — even when you have nothing to say. Answer first, then do the work.telegrambotscallback-queryinline-keyboardhow-to https://justrunmy.app/guides/telegram-deep-link-account-linkinghttps://justrunmy.app/guides/telegram-deep-link-account-linkingSat, 08 Aug 2026 09:00:00 GMTThe payload is 64 characters and visible to anyone with the link. Use a one-time token, not a user ID — and store it somewhere a redeploy can't erase.telegrambotsauthenticationvolumeshow-to https://justrunmy.app/guides/telegram-inline-mode-cachehttps://justrunmy.app/guides/telegram-inline-mode-cacheSat, 08 Aug 2026 09:00:00 GMTInline results cache for 300 seconds and are served to anyone typing the same query. If your results depend on who is asking, that's a data leak.telegrambotscachingprivacyperformancehow-to https://justrunmy.app/guides/telegram-webhook-secret-tokenhttps://justrunmy.app/guides/telegram-webhook-secret-tokenSat, 08 Aug 2026 09:00:00 GMTA webhook URL is just a public endpoint, and nothing filters who reaches it. The secret_token header is two lines of code and the only real check.telegrambotswebhookssecurityhow-to https://justrunmy.app/guides/test-your-bot-locallyhttps://justrunmy.app/guides/test-your-bot-locallySat, 08 Aug 2026 09:00:00 GMTA second application and a private test server give you a real dev loop — and stop the classic mistake of running two copies on one token.discordbotsdevelopmentworkflowhow-to https://justrunmy.app/guides/turn-a-script-into-a-servicehttps://justrunmy.app/guides/turn-a-script-into-a-serviceSat, 08 Aug 2026 09:00:00 GMTA script that runs once and exits isn't a hosting problem, it's a shape problem. Five changes turn it into a worker that survives restarts and says what it did.pythonworkersschedulingbeginnershow-to https://justrunmy.app/guides/verify-your-agent-actually-deployed-ithttps://justrunmy.app/guides/verify-your-agent-actually-deployed-itSat, 08 Aug 2026 09:00:00 GMT"Deployed successfully" means the API calls returned, not that your app works. The status is container-level, so it can be green while nothing works.ai-agentsmcpdebuggingdeploymentverification https://justrunmy.app/guides/websockets-and-redeployshttps://justrunmy.app/guides/websockets-and-redeploysSat, 08 Aug 2026 09:00:00 GMTThere's no connection draining and about a second between stop and kill. So plan for the reconnect — and for every client reconnecting at the same instant.websocketsrealtimedeploymentrestartsarchitecture https://justrunmy.app/guides/what-hosting-an-ai-app-costshttps://justrunmy.app/guides/what-hosting-an-ai-app-costsSat, 08 Aug 2026 09:00:00 GMTEstimate an AI app's hosting costs from CPU, RAM, and disk allocation. A medium API costs $4.15 a month; model API spending is separate.pricingcostllmai-agentsbilling https://justrunmy.app/guides/what-the-platform-notifies-you-abouthttps://justrunmy.app/guides/what-the-platform-notifies-you-aboutSat, 08 Aug 2026 09:00:00 GMTNotifications cover billing, resources, maintenance and support messages. Nothing tells you your application itself stopped working.notificationsmonitoringoperationsbilling https://justrunmy.app/guides/when-youve-outgrown-thishttps://justrunmy.app/guides/when-youve-outgrown-thisSat, 08 Aug 2026 09:00:00 GMTFive structural limits that no amount of resizing fixes, and the much more common case where the thing you've hit is a preset, not a ceiling.architecturescalinglimitsplanning https://justrunmy.app/guides/ai-generated-dockerfile-checklisthttps://justrunmy.app/guides/ai-generated-dockerfile-checklistFri, 07 Aug 2026 09:00:00 GMTLLM-written Dockerfiles are usually valid and frequently wrong in the same ways. Three break the build, three deploy fine and then don't work.dockerdockerfilevibe-codingaideploymenttroubleshooting https://justrunmy.app/guides/apple-silicon-arm64-image-wont-deployhttps://justrunmy.app/guides/apple-silicon-arm64-image-wont-deployFri, 07 Aug 2026 09:00:00 GMTThe platform runs linux/amd64. An arm64 image doesn't fail loudly — the tag never shows up and auto-deploy quietly skips it. Build with --platform.dockerarm64apple-siliconbuildxregistrytroubleshooting https://justrunmy.app/guides/application-marked-as-stalehttps://justrunmy.app/guides/application-marked-as-staleFri, 07 Aug 2026 09:00:00 GMTAn inactivity policy can mark long-stopped apps stale, warn a few times, then remove them. Here's how to read the notifications and how to clear the state.operationsnotificationstroubleshootingbots https://justrunmy.app/guides/back-up-your-volumeshttps://justrunmy.app/guides/back-up-your-volumesFri, 07 Aug 2026 09:00:00 GMTA volume survives redeploys, not mistakes. There are no automatic backups, so here's a dump-and-ship routine that works, and the disk trap to avoid.backupsvolumespostgressqlitedatabaseshow-to https://justrunmy.app/guides/bot-crash-loop-restartinghttps://justrunmy.app/guides/bot-crash-loop-restartingFri, 07 Aug 2026 09:00:00 GMTA crash-looping bot reports a healthy status because the container never exits. Here's the log line that tells you the truth, and what each exit code means.discordtelegrambotsdebugginglogshow-to https://justrunmy.app/guides/bot-data-persist-volume-sqlitehttps://justrunmy.app/guides/bot-data-persist-volume-sqliteFri, 07 Aug 2026 09:00:00 GMTYour bot's database disappears because container filesystems are thrown away on every redeploy. Mount a volume — and know exactly what triggers the reset.discordtelegrambotssqlitevolumeshow-to https://justrunmy.app/guides/bot-online-but-silenthttps://justrunmy.app/guides/bot-online-but-silentFri, 07 Aug 2026 09:00:00 GMTA bot that connects, appears online, and does nothing usually isn't a hosting problem. It's a missing privileged intent, and it needs fixing in two places.discordbotsintentstroubleshootinghow-to https://justrunmy.app/guides/bot-posting-at-the-wrong-time-utchttps://justrunmy.app/guides/bot-posting-at-the-wrong-time-utcFri, 07 Aug 2026 09:00:00 GMTThe clock is right; the timezone isn't. Why TZ fixes less than you think for a scheduled bot, and what to do instead so October doesn't break it.timezoneschedulingbotspythoncontainers https://justrunmy.app/guides/bot-replying-twicehttps://justrunmy.app/guides/bot-replying-twiceFri, 07 Aug 2026 09:00:00 GMTDuplicate replies almost always mean two copies of your bot are running — often the old host you forgot to stop. Here's how to tell which cause you have.discordtelegrambotsdebuggingmigrationhow-to https://justrunmy.app/guides/bot-token-leaked-rotate-ithttps://justrunmy.app/guides/bot-token-leaked-rotate-itFri, 07 Aug 2026 09:00:00 GMTOnce a token has been pushed anywhere, it's burned. Regenerate it, move it to an environment variable, and stop shipping secrets inside the image.securitysecretsdiscordtelegramgitbots https://justrunmy.app/guides/build-memory-limithttps://justrunmy.app/guides/build-memory-limitFri, 07 Aug 2026 09:00:00 GMTBuilds run in their own capped container, so raising your app's RAM doesn't help. Here's what blows the limit and the four ways around it.dockerbuildmemorynodejstroubleshooting https://justrunmy.app/guides/collaborating-on-a-bothttps://justrunmy.app/guides/collaborating-on-a-botFri, 07 Aug 2026 09:00:00 GMTApps have a single owner, so there's no way to share one. That's less limiting than it sounds if deploys run from CI, and it forces a better setup anyway.collaborationgitci-cdbotsoperations https://justrunmy.app/guides/config-files-vs-env-varshttps://justrunmy.app/guides/config-files-vs-env-varsFri, 07 Aug 2026 09:00:00 GMTEnv vars cover most settings, but some software only reads a file. Here's how config-file mounts work, and the rules that reject your input if you break them.configurationdockerenv-varsself-hostedhow-to https://justrunmy.app/guides/crash-loop-identify-limithttps://justrunmy.app/guides/crash-loop-identify-limitFri, 07 Aug 2026 09:00:00 GMTEvery restart that reaches the gateway spends one IDENTIFY. Discord allows 1000 a day, and blowing past it resets your token. A 5-second loop gets there fast.discordbotsrate-limitscrash-looptroubleshooting https://justrunmy.app/guides/deleted-your-apphttps://justrunmy.app/guides/deleted-your-appFri, 07 Aug 2026 09:00:00 GMTDeleting is a soft delete with a retention window, but you can't undo it yourself. Here's what's recoverable, for how long, and how to not need it.operationstroubleshootingbackupsvolumes https://justrunmy.app/guides/deploy-ai-generated-app-checklisthttps://justrunmy.app/guides/deploy-ai-generated-app-checklistFri, 07 Aug 2026 09:00:00 GMTAI-generated projects run fine locally and break in six predictable ways when deployed. Here's what to fix before you upload, and what you can leave alone.aivibe-codingdeploymentpythonnodejshow-to https://justrunmy.app/guides/deploy-dotnet-small-containerhttps://justrunmy.app/guides/deploy-dotnet-small-containerFri, 07 Aug 2026 09:00:00 GMT.NET runs fine on a modest container if you upload publish output rather than source, and know the two GC settings that decide its memory footprint.dotnetaspnet-coredeploymentmemoryhow-to https://justrunmy.app/guides/deploy-fastapi-httpshttps://justrunmy.app/guides/deploy-fastapi-httpsFri, 07 Aug 2026 09:00:00 GMTDeploy FastAPI to a container with a free HTTPS certificate. Three things decide whether the URL answers, and getting them wrong still looks like a successful deploy.fastapipythonapihttpsdeploymenthow-to https://justrunmy.app/guides/deploy-from-github-actions-git-pushhttps://justrunmy.app/guides/deploy-from-github-actions-git-pushFri, 07 Aug 2026 09:00:00 GMTDeploy from a GitHub Actions workflow using plain git push to a deploy remote. No marketplace action, no OAuth app, no SSH keys — plus the shallow-clone trap.github-actionsci-cdgitdeploymenthow-to https://justrunmy.app/guides/deploy-git-push-without-githubhttps://justrunmy.app/guides/deploy-git-push-without-githubFri, 07 Aug 2026 09:00:00 GMTDeploy with git push without GitHub, GitLab, or an OAuth connection. Push a local repo straight to a deploy remote, watch the build stream back, done.gitdeploymentdockerci-cdhow-to https://justrunmy.app/guides/deploy-go-app-small-imagehttps://justrunmy.app/guides/deploy-go-app-small-imageFri, 07 Aug 2026 09:00:00 GMTGo compiles to one static binary, so it deploys as a scratch-based image with almost no runtime overhead. Use a Dockerfile, not the zip uploader.gogolangdockerdeploymentmemoryhow-to https://justrunmy.app/guides/deploy-nodejs-build-signalshttps://justrunmy.app/guides/deploy-nodejs-build-signalsFri, 07 Aug 2026 09:00:00 GMTZero-config deploys aren't guesswork. Your lockfile, engines field, start script, build script, and port decide exactly what the build agent does.nodejstypescriptnpmdeploymenthow-to https://justrunmy.app/guides/deploy-python-build-signalshttps://justrunmy.app/guides/deploy-python-build-signalsFri, 07 Aug 2026 09:00:00 GMTPython version, Poetry vs pip, legacy aiogram pins, and unbuffered logs are all inferred from your project. Here's what gets chosen and how to influence it.pythondiscordtelegrambotspoetryhow-to https://justrunmy.app/guides/deploy-without-dockerfile-ai-build-agenthttps://justrunmy.app/guides/deploy-without-dockerfile-ai-build-agentFri, 07 Aug 2026 09:00:00 GMTYou can deploy without a Dockerfile using buildpacks or an AI build agent. Here's how the two differ, where zero-config detection fails, and which to pick.dockerai-agentsnodejspythondotnethow-to https://justrunmy.app/guides/design-for-restartshttps://justrunmy.app/guides/design-for-restartsFri, 07 Aug 2026 09:00:00 GMTCrashes, redeploys, and maintenance all restart your process, and you get about a second's notice. Here's how to make that a non-event instead of a bug.botsreliabilityarchitectureoperationshow-to https://justrunmy.app/guides/discord-interaction-failed-3-secondshttps://justrunmy.app/guides/discord-interaction-failed-3-secondsFri, 07 Aug 2026 09:00:00 GMTDiscord gives your bot 3 seconds to acknowledge a slash command. Defer for anything slower — and know what a redeploy does to work you deferred.discordbotsslash-commandsdebugginghow-to https://justrunmy.app/guides/docker-image-size-costs-downtimehttps://justrunmy.app/guides/docker-image-size-costs-downtimeFri, 07 Aug 2026 09:00:00 GMTImage size doesn't count against your disk quota; volumes do. So slim images for a different reason — every redeploy pulls the thing before your app starts.dockerimagesbuilddeploymentperformance https://justrunmy.app/guides/file-browser-in-the-panelhttps://justrunmy.app/guides/file-browser-in-the-panelFri, 07 Aug 2026 09:00:00 GMTThe Files tab browses your running container: download a database, upload a seed file, edit a config. Here's what persists and what quietly doesn't.filesbackupsvolumesdebugginghow-to https://justrunmy.app/guides/host-a-webhook-receiverhttps://justrunmy.app/guides/host-a-webhook-receiverFri, 07 Aug 2026 09:00:00 GMTA webhook endpoint needs public HTTPS, a fast 2XX, and a verified signature. Here's how to build one that doesn't lose events when you redeploy.webhooksgithubapisecuritydeploymenthow-to https://justrunmy.app/guides/host-an-llm-agent-24-7https://justrunmy.app/guides/host-an-llm-agent-24-7Fri, 07 Aug 2026 09:00:00 GMTAn LLM agent is nearly the perfect small-container workload: idle, waiting on an API. The things that actually bite are slow calls, restarts, and state.ai-agentsllmworkersopenaihostinghow-to https://justrunmy.app/guides/host-discord-bot-24-7https://justrunmy.app/guides/host-discord-bot-24-7Fri, 07 Aug 2026 09:00:00 GMTDeploy a Discord gateway bot as a worker with a ZIP, set its token as an environment variable, and check logs and data before leaving it running.discordbotsnodejspythonworkershow-to https://justrunmy.app/guides/host-telegram-mini-apphttps://justrunmy.app/guides/host-telegram-mini-appFri, 07 Aug 2026 09:00:00 GMTA Mini App is a web page Telegram embeds, so it needs HTTPS with a valid certificate — and an initData check on your server that most tutorials leave out.telegrammini-appssecurityhttpsbotshow-to https://justrunmy.app/guides/how-many-bots-one-accounthttps://justrunmy.app/guides/how-many-bots-one-accountFri, 07 Aug 2026 09:00:00 GMTApps aren't a billing unit here — you're billed on total CPU, RAM and disk. So the real limit is how much memory your bots use, not how many there are.discordtelegrambotspricingquotashow-to https://justrunmy.app/guides/how-ports-and-urls-workhttps://justrunmy.app/guides/how-ports-and-urls-workFri, 07 Aug 2026 09:00:00 GMTHTTPS bindings get a certificate and a hostname. TCP and UDP get a host and a port that isn't the one you chose. Here's the model, and how to pick a nicer name.portshttpstcpnetworkinghow-to https://justrunmy.app/guides/how-to-roll-back-a-deployhttps://justrunmy.app/guides/how-to-roll-back-a-deployFri, 07 Aug 2026 09:00:00 GMTPushed images keep a tag history you can switch back to in one click. But your database migration doesn't roll back, and `latest` destroys the option entirely.deploymentdockerrollbackoperationshow-to https://justrunmy.app/guides/java-bot-small-containerhttps://justrunmy.app/guides/java-bot-small-containerFri, 07 Aug 2026 09:00:00 GMTJava bots deploy via Dockerfile, not the zip flow. The work is telling the JVM how much of the container it may use — and getting the build to fit.javakotlinjdadiscordmemoryhow-to https://justrunmy.app/guides/laravel-single-process-containerhttps://justrunmy.app/guides/laravel-single-process-containerFri, 07 Aug 2026 09:00:00 GMTThe classic PHP stack is two processes. A container platform wants one. FrankenPHP collapses nginx and PHP-FPM into a single binary — here's the setup.phplaravelfrankenphpdockerdeploymenthow-to https://justrunmy.app/guides/move-bot-off-a-vpshttps://justrunmy.app/guides/move-bot-off-a-vpsFri, 07 Aug 2026 09:00:00 GMTMove a bot from a VPS to one container. Plan its data, public ports, process monitoring and costs before retiring the server.vpsmigrationbotsoperationshow-to https://justrunmy.app/guides/move-discord-bot-off-replithttps://justrunmy.app/guides/move-discord-bot-off-replitFri, 07 Aug 2026 09:00:00 GMTMove a Discord bot from Replit to a long-running container. Export its files and data, set the token, and remove a keep-alive server if you used one.discordtelegrambotsreplitmigrationhow-to https://justrunmy.app/guides/move-heroku-app-what-maps-to-whathttps://justrunmy.app/guides/move-heroku-app-what-maps-to-whatFri, 07 Aug 2026 09:00:00 GMTMap Heroku processes and config vars to containers, then plan the changes needed for Postgres, Scheduler, files, and your app URL.herokumigrationdeploymentpostgreshow-to https://justrunmy.app/guides/no-health-checks-build-a-watchdoghttps://justrunmy.app/guides/no-health-checks-build-a-watchdogFri, 07 Aug 2026 09:00:00 GMTNothing probes your app. Restarts react to a process exiting, not to one that's hung, so a deadlocked worker looks perfectly healthy. Here's the fix.monitoringreliabilitywatchdogoperationsworkers https://justrunmy.app/guides/no-surprise-billshttps://justrunmy.app/guides/no-surprise-billsFri, 07 Aug 2026 09:00:00 GMTBilling here follows what you allocate, not what your traffic does — so a spike can't produce a surprise invoice. Here's the arithmetic and the one exception.pricingbillingquotasoperations https://justrunmy.app/guides/one-click-deploy-linkhttps://justrunmy.app/guides/one-click-deploy-linkFri, 07 Aug 2026 09:00:00 GMTTurn any public Docker image into a shareable deploy link with the image, volumes, ports, and env vars pre-filled. Just a URL — no manifest file to maintain.open-sourcedockerdeploymentself-hostedhow-to https://justrunmy.app/guides/private-docker-registry-avoid-docker-hub-limitshttps://justrunmy.app/guides/private-docker-registry-avoid-docker-hub-limitsFri, 07 Aug 2026 09:00:00 GMTGet a private Docker registry with its own credentials, push images straight to it, and run them — no Docker Hub pull limits and no public image listings.dockerregistryci-cddeploymenthow-to https://justrunmy.app/guides/protecting-a-public-endpointhttps://justrunmy.app/guides/protecting-a-public-endpointFri, 07 Aug 2026 09:00:00 GMTThe edge terminates TLS and routes by hostname — that's all. Every other protection is your app's job. Here's the cheap 80% for a small service.securityapirate-limitingdatabasesarchitecture https://justrunmy.app/guides/right-sizing-cpu-and-ramhttps://justrunmy.app/guides/right-sizing-cpu-and-ramFri, 07 Aug 2026 09:00:00 GMTPresets run from 0.1 vCPU to 2. Start at the bottom, move up only on evidence — and know why a change seems to do nothing until you restart.performancememorybotsquotashow-to https://justrunmy.app/guides/rss-to-discord-feed-bothttps://justrunmy.app/guides/rss-to-discord-feed-botFri, 07 Aug 2026 09:00:00 GMTA feed relay is three moving parts and one classic failure — reposting the whole feed after every redeploy. Here's how to build one that behaves.discordtelegramrssbotsvolumeshow-to https://justrunmy.app/guides/run-your-own-postgres-instead-of-managed-addonhttps://justrunmy.app/guides/run-your-own-postgres-instead-of-managed-addonFri, 07 Aug 2026 09:00:00 GMTA managed Postgres add-on is often the biggest line on a small project's bill. Run Postgres as a container with a volume instead — and know the trade-offs.postgresdatabasesdockervolumeshow-to https://justrunmy.app/guides/scheduled-tasks-without-cronhttps://justrunmy.app/guides/scheduled-tasks-without-cronFri, 07 Aug 2026 09:00:00 GMTIf your bot or worker runs continuously, put the schedule inside it rather than paying for a separate cron service.cronschedulingbotsworkerspythonnodejshow-to https://justrunmy.app/guides/self-host-ntfy-push-notificationshttps://justrunmy.app/guides/self-host-ntfy-push-notificationsFri, 07 Aug 2026 09:00:00 GMTOne small Go binary turns any curl command into a phone notification. Here's the deploy, the auth config people skip, and the honest iOS caveat.self-hostedntfynotificationsdockermonitoringhow-to https://justrunmy.app/guides/self-host-uptime-kumahttps://justrunmy.app/guides/self-host-uptime-kumaFri, 07 Aug 2026 09:00:00 GMTDeploy Uptime Kuma from its public Docker image with a persistent volume and an HTTPS URL, set in a single create form. Plus the one mistake to avoid.uptime-kumaself-hostedmonitoringdockervolumeshow-to https://justrunmy.app/guides/shell-in-every-containerhttps://justrunmy.app/guides/shell-in-every-containerFri, 07 Aug 2026 09:00:00 GMTMinimal images normally mean no shell and no debugging. A static busybox is mounted into every container here, so scratch images stay inspectable.dockerdebuggingdistrolessshellhow-to https://justrunmy.app/guides/sqlite-or-postgres-for-a-bothttps://justrunmy.app/guides/sqlite-or-postgres-for-a-botFri, 07 Aug 2026 09:00:00 GMTNot scale — architecture. If one process owns the data, SQLite on a volume wins easily. If two apps need it, you have no choice, because volumes aren't shared.sqlitepostgresdatabasesbotsarchitecture https://justrunmy.app/guides/staging-bot-alongside-productionhttps://justrunmy.app/guides/staging-bot-alongside-productionFri, 07 Aug 2026 09:00:00 GMTTest bot changes on a second bot account instead of in production. Two apps, two tokens, one codebase — and the app count doesn't affect what you pay.discordtelegrambotsstagingdeploymenthow-to https://justrunmy.app/guides/telegram-bot-hosting-polling-vs-webhookhttps://justrunmy.app/guides/telegram-bot-hosting-polling-vs-webhookFri, 07 Aug 2026 09:00:00 GMTPolling needs no ports and no domain. Webhooks need HTTPS on port 443 with a valid certificate. Here's how to pick, and how to run either one.telegrambotspythonnodejshttpshow-to https://justrunmy.app/guides/the-events-tabhttps://justrunmy.app/guides/the-events-tabFri, 07 Aug 2026 09:00:00 GMTLogs tell you why something broke and then disappear. The event history tells you when and how often, and it's still there after a redeploy.debuggingobservabilitylogsoperationsbots https://justrunmy.app/guides/what-half-a-vcpu-actually-meanshttps://justrunmy.app/guides/what-half-a-vcpu-actually-meansFri, 07 Aug 2026 09:00:00 GMTA fractional CPU quota is a time budget per 100ms window. Exhaust it and the kernel stops your process cold, which is why symptoms come in spikes.cpuperformancecontainersthrottlingtroubleshooting https://justrunmy.app/guides/what-happens-when-you-redeployhttps://justrunmy.app/guides/what-happens-when-you-redeployFri, 07 Aug 2026 09:00:00 GMTA redeploy stops your container, removes it, and builds a new one. Nothing overlaps, so there's real downtime — and your shutdown window is about a second.deploymentdockerlifecyclebotsarchitecture https://justrunmy.app/guides/what-mcp-access-grants-your-agenthttps://justrunmy.app/guides/what-mcp-access-grants-your-agentFri, 07 Aug 2026 09:00:00 GMT22 MCP tools, 8 of them read-only. But read-only isn't the same as harmless — two of those hand your agent credentials. Here's the honest breakdown.mcpai-agentssecuritypermissionscursor https://justrunmy.app/guides/when-your-app-is-stoppedhttps://justrunmy.app/guides/when-your-app-is-stoppedFri, 07 Aug 2026 09:00:00 GMTShell and the file browser need a running container. Logs and events don't. Knowing which is which matters most when a disk overrun stops everything at once.operationsdebuggingvolumesdisktroubleshooting https://justrunmy.app/guides/which-deploy-pathhttps://justrunmy.app/guides/which-deploy-pathFri, 07 Aug 2026 09:00:00 GMTZip upload, git push, Docker push, prefab template, or existing image — each has a real constraint. Here's how to pick in about thirty seconds.deploymentdockergitgetting-startedhow-to https://justrunmy.app/guides/worker-doesnt-fit-in-a-functionhttps://justrunmy.app/guides/worker-doesnt-fit-in-a-functionFri, 07 Aug 2026 09:00:00 GMTFunctions run when invoked. A bot or worker holds a connection nothing invokes. That's structural, not a limit you can raise — here's the hybrid that works.serverlessvercelworkersbotsarchitecture https://justrunmy.app/guides/works-locally-not-deployedhttps://justrunmy.app/guides/works-locally-not-deployedFri, 07 Aug 2026 09:00:00 GMTSame code, different machine. Case-sensitive filenames, CRLF line endings, a UTC clock, and missing env vars cause most of it. Here's the checklist.botsdebuggingtroubleshootingpythonnodejs https://justrunmy.app/guides/you-dont-need-redishttps://justrunmy.app/guides/you-dont-need-redisFri, 07 Aug 2026 09:00:00 GMTFor a single small app, an in-process cache beats a Redis container on speed, cost, and security. Here's when that's true, and what to do when it isn't.rediscachingbotsapisecurityarchitecture https://justrunmy.app/guides/your-logs-are-ephemeralhttps://justrunmy.app/guides/your-logs-are-ephemeralFri, 07 Aug 2026 09:00:00 GMTLogs rotate at roughly 10 MB and disappear entirely when you redeploy. Here's what's captured, what isn't, and how to keep the parts you'll need later.logsdebuggingobservabilitybotshow-to https://justrunmy.app/guides/deploy-apps-ai-agent-mcphttps://justrunmy.app/guides/deploy-apps-ai-agent-mcpThu, 06 Aug 2026 09:00:00 GMTConnect Cursor, VS Code, or Claude Code to JustRunMy.App's MCP server and deploy, configure, and operate apps directly from your AI agent.mcpai-agentsgitautomationhow-to https://justrunmy.app/guides/deploy-mqtt-broker-docker-mosquittohttps://justrunmy.app/guides/deploy-mqtt-broker-docker-mosquittoThu, 06 Aug 2026 09:00:00 GMTHow to deploy Eclipse Mosquitto as a public MQTT broker using a Docker image, a mounted config file, a persistent volume, and a raw TCP port.mqttdockertcpiothow-to