What this snippet does
Stages can inherit from earlier named stages, keeping shared setup in one place.
Expected output
app started in 0.4s
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.
More Docker practice
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- Building a specific stageMulti-stage Builds · intermediate
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- Tests as a build stageMulti-stage Builds · advanced