[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"problem-detail-error-dockerfile-deploy-stops-on-shell-syntax-error":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":79,"engine":96,"related":103,"pitch":110},"dockerfile","dockerfile-deploy-stops-on-shell-syntax-error","Dockerfile deploy stops on shell syntax error","Dockerfile",{"description":9},"Learn what causes Dockerfile deploy stops on shell syntax error, how PanelAlpha Engine responds to it during deployment.",[11,14,16],{"label":12,"href":13},"App Installations","\u002Fapps",{"label":7,"href":15},"\u002Fapps\u002Fstacks\u002Fdockerfile",{"label":6},"",[19],{"text":20},"Error recorded 2 times in PanelAlpha Engine deploys on Dockerfile. 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","2 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 repository was cloned and detected correctly, but the Dockerfile deployment failed while starting the application. The command runner reported ",{"text":42,"code":43},"Syntax error: \"(\" unexpected",true,{"text":45},", which commonly means a Bash-style command was executed by ",{"text":47,"code":43},"\u002Fbin\u002Fsh",{"text":49},", or a generated command was malformed. The exact command is not included in the captured log.",{"heading":51,"block":52},"What the log looks like",{"header":53,"lines":54},"Deploy log",[55,59,63,67,71,75],{"segments":56},[57],{"text":58},"Starting stage: running",{"segments":60},[61],{"text":62},"Detected project type: Dockerfile",{"segments":64},[65],{"text":66},"Using strategy: dockerfile",{"segments":68},[69],{"text":70},"Clearing inner Docker cache before heavy build",{"segments":72},[73],{"text":74},"sh: 3: Syntax error: \"(\" unexpected",{"segments":76},[77],{"text":78},"Deploy failed: Failed to start app: sh: 3: Syntax error: \"(\" unexpected",{"heading":80,"steps":81,"block":93},"How to fix it",[82],[83,85,87,89,91],{"text":84},"Review the Dockerfile, compose commands, and any deployment hooks for Bash-only syntax such as arrays, process substitution, or function declarations. Run the failing build\u002Fstart command with ",{"text":86,"code":43},"\u002Fbin\u002Fbash",{"text":88}," where required, or rewrite it for POSIX ",{"text":90,"code":43},"sh",{"text":92},". Re-run the deployment after checking the command immediately following the Docker cache-clearing step.",{"header":94,"lines":95},"Fix by hand",[],{"heading":97,"body":98,"block":101},"How PanelAlpha Engine solves it",[99],{"text":100},"Capture the generated command and its script context when a shell exits with a syntax error. The Dockerfile strategy should also use an explicitly selected shell and report whether a hook, compose command, or Engine-generated command failed.",{"header":17,"lines":102},[],{"heading":104,"items":105},"Apps affected",[106],{"title":107,"badge":108,"tone":25,"href":109},"astronomia","2 occurrences","\u002Fapps\u002Fselimdev00\u002Falphard",{"heading":111,"body":112,"footNote":113,"docsLabel":114,"docsHref":115},"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"]