Multiple DockerHost to restart containers in different vms

[t-abraham]

Containers restart #1 you added the option to restart containers using the RESTART_CONTAINERS env var and the use of DOCKER_HOST to add the proxy. But is it possible to add support for multiple docker hosts? Like this

version: "3.7"

services:
  test:
    image: ghcr.io/kereis/traefik-certs-dumper:latest
    restart: always
    environment:
      - DOCKER_HOST=10.20.30.101:2375,10.20.30.102:2375,10.20.30.103:2375
      - RESTART_CONTAINERS=container1,container2,container3

here container1 is at 10.20.30.102:237, container2 is at 10.20.30.103:237, container3 is at 10.20.30.101:237

something like this...

[kereis]

I can't tell if DOCKER_HOST accepts multiple hosts, but if it's as simple as swapping out DOCKER_HOST, then I could add some kind of env var for setting a mapping table (either as JSON or as a list of key-values).

It could look something like this:

services:
  test:
    image: ghcr.io/kereis/traefik-certs-dumper:latest
    restart: always
    environment:
      - DOCKER_HOST_MAPPING={
            "10.20.30.101:2375": [
                "container1"
            ],
            "10.20.30.102:2375": [
                "container2"
            ]
            "10.20.30.103:2375": [
                "container3"
            ]
         }
      - RESTART_CONTAINERS=container1,container2,container3

or we could go ahead, skip DOCKER_HOST, and instead specify the Docker host for each container - either in the same fashion as DOCKER_HOST_MAPPING above, or {docker_host}:{container_name}.

services:
  test:
    image: ghcr.io/kereis/traefik-certs-dumper:latest
    restart: always
    environment:
      - RESTART_CONTAINERS=10.20.30.102:237=container1,10.20.30.102:2375=container2,10.20.30.103:2375=container3

The option above would make RESTART_CONTAINERS a bit cluttery if you specify way more containers.