YAML Anchors, Aliases, and Merge Keys/Reuse environment variables

Avoid copying the same environment block.

Section: Real-world reuse patterns

Reuse environment variables

yaml
yaml
env: &common_env
  NODE_ENV: production
  LOG_LEVEL: info

worker:
  env: *common_env
Explanation

Anchors make shared environment sections easier to maintain.

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Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

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