What this snippet does
Shell form runs the process under /bin/sh as PID 1, so SIGTERM never reaches the application.
Expected output
docker stop app (10s timeout, then SIGKILL)
Why practise typing this
Typing cmd & entrypoint code builds muscle memory for the symbols and indentation Docker uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Docker practice
- Exec form vs shell formCMD & ENTRYPOINT · intermediate
- Overriding CMD at run timeCMD & ENTRYPOINT · beginner
- Overriding ENTRYPOINTCMD & ENTRYPOINT · intermediate
- CMD ignored when args are passedCMD & ENTRYPOINT · intermediate
- Entrypoint wrapper with execCMD & ENTRYPOINT · advanced
- Forgetting exec in the wrapperCMD & ENTRYPOINT · advanced