version: '3.7'

services:

  demo:
    command: [ "python", "/srv/source/demo.py" ]
    container_name: 'demo'
    hostname: 'demo'
    image: 'python:3.5.2-alpine'
    volumes:
      - '.:/srv:ro'

  antidemo:
    command: [ "python", "/srv/source/demo.py" ]
    container_name: 'antidemo'
    hostname: 'antidemo'
    image: 'python:3.6.7-alpine'
    volumes:
      - '.:/srv:ro'