Added chapter on deinstalling

docs/deinstall.md

@@ -0,0 +1,11 @@
+To remove mailcow: dockerized with all it's volumes, images and containers do:
+
+```
+docker-compose down -v --rmi all --remove-orphans
+```
+
+!!! info
+    - **-v** Remove named volumes declared in the `volumes` section of the Compose file and anonymous volumes attached to containers.
+    - **--rmi <type>** Remove images. Type must be one of: `all`: Remove all images used by any service. `local`: Remove only images that don't have a custom tag set by the `image` field.
+    - **--remove-orphans** Remove containsers for services not defined in the compose file.
+    - By default `docker-compose down` only removes currently active containers and networks devinded in the `docker-compose.yml`.

mkdocs.yml

@@ -46,6 +46,7 @@ pages:
   - 'Blacklist / Whitelist': 'bl_wl.md'
   - 'Autodiscover / Autoconfig': 'autodiscover_config.md'
   - 'Disable Sender Addresses Verification': 'disable_sender_verification.md'
+  - 'Deinstall': 'deinstall.md'
 - 'Third party apps':
   - 'Roundcube': 'roundcube.md'
   - 'Portainer': 'portainer.md'