Update docker.md

docs/guides/installation/docker.md

@@ -31,6 +31,16 @@ ADMIN_EMAIL="admin@example.com"
 ADMIN_PASSWORD="d1r3ctu5"
 ```
 
+## Persistence
+
+Containers are ephemeral, and this means that whenever you stop a container, all the data associated with it is going to be removed [unless you persist them] when creating your container (https://docs.docker.com/storage/).
+
+Directus image by default [will use the following locations](https://github.com/directus/directus/blob/main/.github/actions/build-images/rootfs/directus/images/main/Dockerfile#L93-L96) for data persistence (unless changed through environment variables)
+
+- `/directus/uploads` for uploads
+- `/directus/database` (only when using SQLite and not configured to a different folder)
+- `/directus/extensions` for extension loadings
+
 ## Docker Compose
 
 When using Docker compose, you can use the following setup to get you started:
@@ -61,6 +71,15 @@ services:
     image: directus/directus:v9.0.0-rc.24
     ports:
       - 8055:8055
+    volumes:
+		  # By default, Directus images writes uploads to /directus/uploads
+			# Always make sure your volumes matches the storage root when using 
+			# local driver
+		  - ./uploads:/directus/uploads
+		  # Make sure to also mount the volume When using SQLite
+		  # - ./database:/directus/database
+			# If you want to load extensions from the host
+			# - ./extensions:/directus/extensions
     networks:
       - directus
     depends_on: