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Automatic Updates

Use Watchtower to pull newer images and restart the selected containers.

Updates follow the tag in your Compose file. With the documented html2rss/web:1 image, Watchtower stays on major version 1.

Add this service to your existing docker-compose.yml:

services:
  watchtower:
    image: containrrr/watchtower
    restart: unless-stopped
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      # Optional for private registries only:
      # - "${HOME}/.docker/config.json:/config.json:ro"
    command: --cleanup --interval 7200 html2rss-web botasaurus browserless caddy

Then restart the stack:

Terminal window
docker compose up -d

Operational notes:

  • Keep the Docker socket mount (read-only in this example).
  • Add the optional Docker config mount only if you pull private images that require registry auth.
  • The shown command scopes updates to html2rss-web, browserless, and caddy; change the service names if your stack differs.
  • Check docker compose logs watchtower to confirm scans and update runs.