add Watchtower

watchtower/script-watchtower.sh

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+#test updates in watchtower with ntfy notification
+docker stop nginx
+# list previous nginx images then pipe them into removal
+docker image ls --filter='reference=nginx:*' -q | xargs docker rmi -f
+# remove dangling layers, avoid "already exists messages"
+docker image prune
+# pull old version
+docker pull nginx:1.26
+# tag that mofo
+docker image tag nginx:1.26 nginx:1
+# important: run the container
+docker run --rm --detach --name nginx nginx:1
+# watchtower run once and notify
+docker run --rm --net proxy --name watchtower2 -v /var/run/docker.sock:/var/run/docker.sock -e WATCHTOWER_CLEANUP=false -e TZ=America/New_York -e WATCHTOWER_NOTIFICATION_SKIP_TITLE=True -e WATCHTOWER_NOTIFICATION_URL="ntfy://:token_goes_here@ntfy.meftimes.com/alerts?title=Watchtower&priority=high" containrrr/watchtower --debug --run-once nginx

watchtower/watchtower.yml

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+services:
+  watchtower:
+    image: containrrr/watchtower
+    container_name: watchtower
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    command: --debug
+    environment:
+      WATCHTOWER_SCHEDULE: "0 0 9 * * 0"
+      WATCHTOWER_CLEANUP: false
+      WATCHTOWER_DISABLE_CONTAINERS: "gitea postgres" 
+      TZ: "America/New_York" 
+      WATCHTOWER_NO_STARTUP_MESSAGE: true
+      WATCHTOWER_TIMEOUT: 30s
+      WATCHTOWER_NOTIFICATION_SKIP_TITLE: true
+      WATCHTOWER_NOTIFICATION_URL: "ntfy://:token_goes_here@ntfy.meftimes.com/alerts?title=Watchtower&priority=high"
+    networks:
+      - proxy
+    restart: unless-stopped
+
+networks:
+  proxy:
+    external: true