docker-compose.yml

# DATA-ONLY CONTAINER
data:
 container_name: vtk_data
 image: busybox
 volumes:
  - .:/data

# WEB CONTAINERS
web1:
 restart: always
 container_name: ans-web1
 build: .
 dockerfile: client/Dockerfile
 stdin_open: true
 tty: true
 working_dir: /data
 expose: 
  - 80
  - 443
  - 22

web2:
 restart: always
 container_name: ans-web2
 build: .
 dockerfile: client/Dockerfile
 volumes_from: 
  - data
 stdin_open: true
 tty: true
 working_dir: /data
 expose: 
  - 80
  - 443
  - 22

# DB CONTAINERS
db1:
 restart: always
 container_name: ans-db1
 build: .
 dockerfile: client/Dockerfile
 volumes_from: 
  - data
 stdin_open: true
 tty: true
 working_dir: /data
 expose: 
  - 5432
  - 22

db2:
 restart: always
 container_name: ans-db2
 build: .
 dockerfile: client/Dockerfile
 volumes_from: 
  - data
 stdin_open: true
 tty: true
 working_dir: /data
 expose: 
  - 5432
  - 22

# CONTROL CONTAINER
control:
 restart: always
 container_name: ans-control
 build: .
 dockerfile: control/Dockerfile
 volumes_from: 
  - data
 working_dir: /data
 stdin_open: true
 tty: true
 command: bash
 links: 
  - web1
  - web2
  - db1
  - db2