Watchtower prototype added.

README.md

@@ -45,5 +45,6 @@ Not every stack is tested to fully work.
 - [x] Redis
 - [ ] Sonarr (prototype state, working itself, but transmission-on-host integration didn't work due to path mismatch)
 - [x] Speedtest (LibreSpeed)
+- [ ] Watchtower (prototype state)
 - [ ] Wordpress (prototype state)
 - [ ] YaCy (abandoned due to upstream code problems)

watchtower/.env.dist

@@ -0,0 +1,8 @@
+# https://hub.docker.com/r/containrrr/watchtower
+# https://containrrr.dev/watchtower/
+
+# Define containers (separated by space) which you want to automatically update here:
+CONTAINERS_LIST=container1 container2
+
+LOG_MAX_SIZE=5m
+LOG_MAX_FILE=5

watchtower/docker-compose.yml

@@ -0,0 +1,18 @@
+version: '3.7'
+
+services:
+  watchtower:
+    # https://hub.docker.com/r/containrrr/watchtower
+    # https://containrrr.dev/watchtower/
+    image: containrrr/watchtower:latest
+    container_name: watchtower
+    volumes:
+      - "/var/run/docker.sock:/var/run/docker.sock"
+    env_file: .env
+    restart: unless-stopped
+    command: "${CONTAINERS_LIST}"
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "${LOG_MAX_SIZE:-5m}"
+        max-file: "${LOG_MAX_FILE:-5}"