docker redmine postgresql

docker-compose.yml

services:
  web:
    image: 'redmine:passenger'
    container_name: 'redmine_web'
    restart: always
    ports:
      - '3000:3000'
    links:
      - postgres
    environment:
      POSTGRES_PORT_5432_TCP: 5432
      POSTGRES_ENV_POSTGRES_USER: redmine
      POSTGRES_ENV_POSTGRES_PASSWORD: pswd
    volumes:
      - '/srv/redmine/files/:/usr/src/redmine/files/'
      - '/srv/redmine/config/configuration.yml:/usr/src/redmine/config/configuration.yml'
  postgres:
    image: 'postgres'
    container_name: 'redmine_db'
    restart: always
    environment:
      POSTGRES_PASSWORD: pswd
      POSTGRES_USER: redmine
    volumes:
      - '/srv/postgres/:/var/lib/postgresql/data'
    ports:
      - '5432:5432'

@tiryu it was on my previous work. As I remember I just configured simple proxypass.