What this snippet does
--init inserts a tiny init process as PID 1 that forwards signals and reaps orphaned children.
Expected output
1 docker-init 7 node
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
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- Shell form swallows signalsCMD & 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