Added basic watchtower setup

watchtower/docker-compose.yml

@@ -0,0 +1,10 @@
+version: '3.5'
+
+services:
+    app:
+        image: 'containrrr/watchtower'
+        restart: 'always'
+
+        volumes:
+            - '/var/run/docker.sock:/var/run/docker.sock'
+            - '/etc/timezone:/etc/timezone:ro'

watchtower/watchtower.env.example

@@ -0,0 +1 @@
+WATCHTOWER_LABEL_ENABLE=true