NewDocker creates a new Docker instance.

WithClient returns an option to configure a Docker client on a Docker instance.

WithLogger returns an option to configure the logger on a Docker instance.

MessageMountPath is the path used by Actions to write their failure message.

ReasonMountPath is the path used by Actions to write their failure reasons.

Docker is a docker runtime that satisfies agent.ContainerRuntime.

Fake is a runtime that always succeeds.

DockerOption defines optional configuration for a Docker instance.