[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"problem-detail-error-start-app-non-string-key-in-services-postgres":3},{"stack":4,"error":5,"seoName":6,"seoStack":7,"seo":8,"breadcrumb":10,"titlePrefix":17,"titleAccent":6,"lead":18,"facts":21,"why":36,"log":50,"fix":67,"engine":95,"related":106,"pitch":109},"compose","start-app-non-string-key-in-services-postgres","Docker Compose app failed on an invalid environment key","Docker Compose",{"description":9},"Learn what causes Docker Compose app failed on an invalid environment key, how PanelAlpha Engine responds to it during deployment.",[11,14,16],{"label":12,"href":13},"App Installations","\u002Fapps",{"label":7,"href":15},"\u002Fapps\u002Fstacks\u002Fcompose",{"label":6},"",[19],{"text":20},"Error recorded 1 times in PanelAlpha Engine deploys on Docker Compose. The deploy log below is the recorded failure output.",[22,27,30,32],{"label":23,"value":24,"tone":25,"tooltip":26},"Type","Error","err","An error that occurred in the deployed application. It is not necessarily a PanelAlpha Engine error, but we keep working on improvements so you run into fewer of them.",{"label":28,"value":29},"Seen","1 times",{"label":31,"value":7},"Where",{"label":33,"value":34,"tooltip":35},"Status","Observed","Our team will look into this soon, verify the cause and try to fix it in an upcoming release.",{"heading":37,"body":38},"Why it happens",[39,41,44,46,48],{"text":40},"The Compose file contains a numeric key (",{"text":42,"code":43},"0",true,{"text":45},") under the Postgres service's ",{"text":47,"code":43},"environment",{"text":49}," section. Docker Compose expects environment variable names to be strings, so the application could not start.",{"heading":51,"block":52},"What the log looks like",{"header":53,"lines":54},"Deploy log",[55,59,63],{"segments":56},[57],{"text":58},"Starting application (docker compose up -d)",{"segments":60},[61],{"text":62},"non-string key in services.\u003Caccount>-postgres.environment: 0",{"segments":64},[65],{"text":66},"Deploy failed: Failed to start app: non-string key in services.\u003Caccount>-postgres.environment: 0",{"heading":68,"steps":69,"block":92},"How to fix it",[70],[71,73,75,77,78,80,82,84,86,88,90],{"text":72},"Open ",{"text":74,"code":43},"compose.yaml",{"text":76}," and inspect the ",{"text":47,"code":43},{"text":79}," section for the Postgres service. Replace numeric or malformed entries with string variable assignments, such as ",{"text":81,"code":43},"POSTGRES_DB: app",{"text":83}," or ",{"text":85,"code":43},"- POSTGRES_DB=app",{"text":87},". Validate the file with ",{"text":89,"code":43},"docker compose config",{"text":91},", then redeploy.",{"header":93,"lines":94},"Fix by hand",[],{"heading":96,"body":97,"block":104},"How PanelAlpha Engine solves it",[98,100,102],{"text":99},"Validate and normalize Compose manifests before running ",{"text":101,"code":43},"docker compose up",{"text":103},", and report the exact service and source line for non-string environment keys.",{"header":17,"lines":105},[],{"heading":107,"items":108},"Apps affected",[],{"heading":110,"body":111,"footNote":112,"docsLabel":113,"docsHref":114},"Try PanelAlpha Engine yourself.","The easiest way to turn your server into a safe, controlled environment for your AI agent. Deploy, manage and maintain any project from Claude Code, Cursor, Codex or any other MCP client. Open source under Apache 2.0, free to run.","Requires Ubuntu 24.04 or 26.04 · 2 GB RAM · 1 CPU","Read the documentation","https:\u002F\u002Fpanelalpha.com\u002Fdocs"]