The snippet library.
Small, practical examples. Search by task or narrow things down below.
Add a fixed hostname mapping
Docker / Compose: extra_hosts adds an entry to the container’s hosts file.
Docker / Compose✓ Tested
Assign a network-scoped alias
Docker / Compose: An alias gives an endpoint an additional name on that network.
Docker / Compose✓ Tested
Attach a descriptive label to a container
Docker / Compose: Attach a descriptive label to a container using a locally available Ubuntu image.
Docker / Compose✓ Tested
Attach an existing container to another network
Docker / Compose: network connect adds an attachment without recreating the container.
Docker / Compose✓ Tested
Attach containers to a user-defined network
Create a dedicated network for a small group of containers.
network✓ Tested
Build an image with a default command
Docker / Compose: Build an image with a default command with a complete introductory Dockerfile.
Docker / Compose✓ Tested
Check that an image has layer history
Docker / Compose: history shows the instructions associated with image layers.
Docker / Compose✓ Tested
Choose a service’s internal hostname
Docker / Compose: hostname controls the name reported inside the container.
Docker / Compose✓ Tested
Choose an image’s default directory
Docker / Compose: Choose an image’s default directory with a complete introductory Dockerfile.
Docker / Compose✓ Tested
Choose Bash with pipefail for build commands
Docker / Compose: SHELL changes the interpreter for subsequent shell-form instructions.
Docker / Compose✓ Tested
Choose the command a container executes
Docker / Compose: Choose the command a container executes using a locally available Ubuntu image.
Docker / Compose✓ Tested
Choose the signal used for graceful stopping
Docker / Compose: The configured stop signal is recorded in container metadata.
Docker / Compose✓ Tested