By default, docker-compose will create a network with a randomly named bridge. If you are like me using a strict firewall on all your machines, this just cannot work.
You need to put your services in
network_mode: “bridge” and add a custom
network entry like :
version: '3.0' services: sshportal: image: moul/sshportal environment: - SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN=integration command: server --debug depends_on: - testserver ports: - 2222 network_mode: "bridge" networks: default: external: name: bridge