docker-compose.yml

version: '3'

services:
    db:
        image: postgres
        environment:
            - POSTGRES_DB=${POSTGRES_DB}
            - POSTGRES_USER=${POSTGRES_USER}
            - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    migration:
        build: .
#        command: python3 manage.py migrate
        command: bash -c 'while !</dev/tcp/db/5432; do sleep 1; done; python3 manage.py migrate'
        volumes:
            - .:/usr/src/app
        depends_on:
            - db
    web:
        build: .
#        command: python3 manage.py runserver 0.0.0.0:8000
#        container_name: webapp-dpdth
        image: webapp-dpdth
        command: bash -c 'while !</dev/tcp/db/5432; do sleep 1; done; python3 manage.py runserver 0.0.0.0:8000'
        volumes:
            - .:/usr/src/app
        ports:
            - "8000:8000"
        depends_on:
            - db
            - migration

        # https://medium.com/faun/tech-edition-how-to-dockerize-a-django-web-app-elegantly-924c0b83575d
        # Need to change settings.py to use OS env variables if using this
        # environment section. Also need to update env variables
        # in .bash_profile
#        environment:
#            POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
#            POSTGRES_USER: ${POSTGRES_USER}
#            DJANGO_DB_NAME: ${DJANGO_DB_NAME}
#            DJANGO_SU_NAME: ${DJANGO_SU_NAME}
#            DJANGO_SU_EMAIL: ${DJANGO_SU_EMAIL}
#            DJANGO_SU_PASSWORD: ${DJANGO_SU_PASSWORD}
# ********** set DJANGO_SECRET_KEY in Travis & Heroku website **********
#            DJANGO_SECRET_KEY: ${DJANGO_SECRET_KEY}