What this snippet does
A command after the image name replaces CMD entirely for that container.
Expected output
overridden
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
- Shell form swallows signalsCMD & ENTRYPOINT · intermediate
- 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