Docker

Heredoc in a RUN instruction in Docker

DockerBuildKit & BuildxHeredocadvanced

What this snippet does

Heredocs keep multi-line shell readable without trailing backslashes.

Expected output

curl 8.9.0 (x86_64-alpine-linux-musl)

Why practise typing this

Typing buildkit & buildx 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.

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