docker_and_ssh.md

If you cannot ssh via vpn to your machine after starting the docker service, this is likely due to overlapping addresses of docker networks and other stuff.

follow these steps:

1. Stop all running containers
2. Remove existing docker networks by running docker network prune
3. Inspect if all networks were removed by running docker network list. Only networks with names bridge host and none should remain. If there are other networks, run docker network rm [NETWORK ID].
4. Edit/create the file /etc/docker/daemon.json and insert:

   {
   "default-address-pools" : [
           {
           "base" : "172.240.0.0/16",
           "size" : 24
           }
       ]
   } 
   

   This will tell docker to use the ip range 172.240.0.0/16 for newly created docker networks
5. Restart the machine
6. Start the docker service: systemctl start docker
7. First time using docker compose, you should use docker compose up --force-recreate. This will recreate the deleted docker network, this time using an address from the default-address-pools.
8. You should now be able to ssh

Adapted from https://www.lullabot.com/articles/fixing-docker-and-vpn-ip-address-conflicts