To avoid bloated Docker images and containers, it is a best practice to store persistent data outside the container's writable layer by using storage mounts.

Mounting allows a Docker container to access files from external storage locations. Depending on the mount type, the container can read, write, and sometimes execute files without storing them inside the container image.

Docker provides three main types of mounts:

1. Docker Volume Mounts

Docker volumes are the recommended method for storing persistent application data.