What this snippet does
An anchor defines the block once and aliases reuse it across services.
Expected output
api Started worker Started
Why practise typing this
Typing compose advanced 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
- Layering override filesCompose Advanced · advanced
- Reusing a service definitionCompose Advanced · advanced
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- Missing variable becomes emptyCompose Advanced · intermediate
- Default values in composeCompose Advanced · intermediate
- Compose secretsCompose Advanced · advanced