Give a Docker Compose service a fixed container_name and understand its single-instance limit

domain: docs.docker.com/compose/compose-file/05-services · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. Add `container_name: <name>` to the service to fix the container's name instead of the default <project>-<service>-<replica> pattern.
  2. Name must match regex [a-zA-Z0-9][a-zA-Z0-9_.-]+.
  3. Because the name is fixed, the service cannot be scaled beyond one container; attempting to scale errors.
  4. Prefer relying on the auto-generated name unless another system requires a stable, known container name.
  5. Docs: https://docs.docker.com/compose/compose-file/05-services/#container_name

Known gotchas

Related routes

Set a fixed container name in Docker Compose with container_name
docs.docker.com/compose/compose-file/05-services/ · 5 steps · unrated
Set a Compose service to use the host-side or service-shared IPC and shared memory limits
docker · 4 steps · unrated
Override container ulimits for a Docker Compose service
docker · 6 steps · unrated

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