Docker compose predictable bridge

2018-09-25 - How to use a predefined bridge with docker compose
Tag: docker

The problem

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.

The fix

For example if your bridge is named docbr1, 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: docbr1