Improvement Uptime kuma

[Emilien-Lambert]

Hi, I'd like to propose 2 improvements for the docker-compose.yml.

Add socket to monitor docker status

    volumes:
      - ${APP_DATA_DIR}/data/uptime-kuma:/app/data
      - /var/run/docker.sock:/var/run/docker.sock # HERE 

I can now configure the docker host as follows

The second suggestion is to add 2 different DNS in the configuration. I've had problems with uptime kuma telling me that my services were down when this wasn't true. And the solution is that there should be a limit on the number of DNS requests. Like this issue

    dns:
      - 1.1.1.1 # Cloudflare
      - 8.8.8.8 # Google
      # Or something else