Network Subnet Config of Test Setup Can Result in Error During Start Via Docker-Compose

[hhund]

Starting the 3 MeDIC/TTP docker test setup can result in Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network.

According to docker/docs#8663 docker uses 172.17.0.0/12 and 192.168.0.0/16 as default address pools, we should move our hard-coded networks, e.g.

highmed-dsf/dsf-docker-test-setup-3medic-ttp-docker/docker-compose.yml

Line 602 in e273665

- subnet: 172.20.0.0/28

to an address range not used by docker.

Workaround:
Configure the default-address-pools via daemon.json. The following config excludes 172.20.0.0/16:

{
  "default-address-pools": [
    {
      "base": "172.17.0.0/14",
      "size": 16
    },
    {
      "base": "172.21.0.0/16",
      "size": 16
    },
    {
      "base": "172.22.0.0/15",
      "size": 16
    },
	{
      "base": "172.24.0.0/13",
      "size": 16
    }
  ]
}