The snippet library.
Small, practical examples. Search by task or narrow things down below.
Read a field from container metadata
Use an inspect template for stable machine-readable output.
inspect✓ Tested
Read a secret from a mounted file
Docker / Compose: Compose secrets make a file available under /run/secrets.
Docker / Compose✓ Tested
Read an image’s default command
Docker / Compose: Config.Cmd contains the command arguments stored in the image.
Docker / Compose✓ Tested
Read output from a completed container
Retrieve the stdout captured by Docker.
logs✓ Tested
Remove one network attachment
Docker / Compose: network disconnect removes the specified attachment while retaining the container.
Docker / Compose✓ Tested
Remove one tag while retaining another reference
Docker / Compose: Removing a tag does not delete an image still referenced by another tag.
Docker / Compose✓ Tested
Rename a container without recreating it
Docker / Compose: rename updates the container name while preserving its identity.
Docker / Compose✓ Tested
Require a locally available image
Docker / Compose: The never pull policy fails for missing images instead of attempting a download.
Docker / Compose✓ Tested
Resolve a peer’s name on a user-defined network
Docker / Compose: The embedded DNS service resolves names on user-defined bridges.
Docker / Compose✓ Tested
Restart an existing container
Docker / Compose: restart starts the same container again while retaining its writable layer.
Docker / Compose✓ Tested
Retrieve a file from a stopped container
Docker / Compose: The writable layer remains available for docker cp after exit.
Docker / Compose✓ Tested
Run a command in a running container
Execute an additional process inside an existing container.
exec✓ Tested