What this snippet does
The toolchain stays in the builder stage while only the compiled binary reaches the final image.
Expected output
myapp latest 1a4c8e2b7f93 14.2MB
Why practise typing this
Typing multi-stage builds 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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- Tests as a build stageMulti-stage Builds · advanced