[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"problem-detail-error-time-11t14-13z-level-warning-msg-the-assets":3},{"stack":4,"error":5,"seoName":6,"seoStack":7,"seo":8,"breadcrumb":10,"titlePrefix":17,"titleAccent":18,"lead":19,"facts":22,"why":37,"log":51,"fix":72,"engine":96,"related":111,"pitch":118},"compose","time-11t14-13z-level-warning-msg-the-assets","Compose deploy fails because the container image tag is empty","Docker Compose",{"description":9},"Learn what causes Compose deploy fails because the container image tag is empty, 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},"Compose deploy fails because ","the container image tag is empty",[20],{"text":21},"Error recorded 1 times in PanelAlpha Engine deploys on Docker Compose. The deploy log below is the recorded failure output.",[23,28,31,33],{"label":24,"value":25,"tone":26,"tooltip":27},"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":29,"value":30},"Seen","1 times",{"label":32,"value":7},"Where",{"label":34,"value":35,"tooltip":36},"Status","Observed","Our team will look into this soon, verify the cause and try to fix it in an upcoming release.",{"heading":38,"body":39},"Why it happens",[40,42,45,47,49],{"text":41},"The Compose file references an image ending with ",{"text":43,"code":44},":",true,{"text":46}," because the ",{"text":48,"code":44},"TAG",{"text":50}," variable is unset. Docker rejects the resulting image name as an invalid reference format. Several application variables are also unset and may prevent the app from working after startup.",{"heading":52,"block":53},"What the log looks like",{"header":54,"lines":55},"Deploy log",[56,60,64,68],{"segments":57},[58],{"text":59},"Starting application (docker compose up -d)",{"segments":61},[62],{"text":63},"time=\"2026-09-11T14:17:13Z\" level=warning msg=\"The \\\"TAG\\\" variable is not set. Defaulting to a blank string.\"",{"segments":65},[66],{"text":67},"unable to get image 'ghcr.io\u002Fvenil7\u002F\u003Caccount>:': Error response from daemon: invalid reference format",{"segments":69},[70],{"text":71},"Deploy failed: Failed to start app",{"heading":73,"steps":74,"block":93},"How to fix it",[75],[76,78,79,81,83,85,87,89,91],{"text":77},"Set ",{"text":48,"code":44},{"text":80}," to a valid image tag in the app environment or deployment configuration, then redeploy. Provide the required ",{"text":82,"code":44},"ASSETS_*",{"text":84}," variables and any other values referenced by ",{"text":86,"code":44},"docker-compose.yaml",{"text":88},". If the service should build locally instead of pulling an image, verify that its Compose service uses a valid ",{"text":90,"code":44},"build",{"text":92}," configuration.",{"header":94,"lines":95},"Fix by hand",[],{"heading":97,"body":98,"block":108},"How PanelAlpha Engine solves it",[99,101,103,105,106],{"text":100},"Validate required Compose variables before running ",{"text":102,"code":44},"docker compose up",{"text":104}," and report the affected service and variable. Detect image references that end with ",{"text":43,"code":44},{"text":107}," and provide a direct configuration error instead of passing the invalid reference to Docker.",{"header":109,"lines":110},"",[],{"heading":112,"items":113},"Apps affected",[114],{"title":115,"badge":116,"tone":26,"href":117},"Assets","1 occurrence","\u002Fapps\u002Fvenil7\u002Fassets",{"heading":119,"body":120,"footNote":121,"docsLabel":122,"docsHref":123},"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"]