Architectural Patterns

Volumes

We can create a volume explicitly using the docker volume create command, or Docker can create a volume during container or service creation. When we create a volume, it is stored in a directory on the Docker host. When we mount the volume into a container, this is the directory that is mounted on the container. This is similar to the way that bind mounts work, except that volumes are managed by Docker and are isolated from the core functionality of the host machine.

A given volume can be mounted into multiple containers simultaneously. When no running container is using a volume, the volume is still available to Docker and is not removed automatically. You can remove unused volumes using docker volume prune. Volumes also support ...