Manage data in Docker | Docker Documentation
https://docs.docker.com/storageManage data in Docker. By default all files created inside a container are stored on a writable container layer. This means that: The data doesn’t persist when that container no longer exists, and it can be difficult to get the data out of the container if another process needs it. A container’s writable layer is tightly coupled to the host ...
Manage data in Docker | Docker Documentation
docs.docker.com › storageVolumes are stored in a part of the host filesystem which is managed by Docker ( /var/lib/docker/volumes/ on Linux). Non-Docker processes should not modify this part of the filesystem. Volumes are the best way to persist data in Docker. Bind mounts may be stored anywhere on the host system. They may even be important system files or directories.