version: '2'

services:
   sogo:

#      if you want to build your own image

      build: 
         context: .
         args:
            - version=3.1.5

#     if you want to use builded image, uncomment next line
#      image: julienfastre/sogo:3.1

      links: 
         - db
      volumes:

#     replace by the path to your own sogo.conf file

         - ./../sogo.conf:/etc/sogo/sogo.conf
   db:
      image: postgres:9.5
      ports:
         - "5432"
   memcached:
      image: memcached:1.4-alpine
   nginx:
      image: nginx
      links:
         - sogo
      volumes_from:
         - sogo:ro
      ports:
         - "8080:80"
      volumes: 
         - ./nginx.conf:/etc/nginx/nginx.conf:ro