Jobs in GitHub Actions: needs, matrix, concurrency, timeouts and Service Containers
Jobs run in parallel by default; needs builds a DAG, and everything depending on a failed job is skipped. We split the Bookstore CI into format, unit-test (OS matrix), integration-test (PostgreSQL 16/17/18 service container), web-build and publish jobs and run it with act, covering include/exclude, fail-fast, max-parallel, concurrency, timeout-minutes, continue-on-error and the service command/entrypoint keys from April 2026.
8 Nov 2026
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11 min
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5
