app/docker-compose.yml

version: "3.7"

services:
  caddy:
    image: caddy:2.2.1-alpine
    environment:
      URL:
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./configurations/Caddyfile:/etc/caddy/Caddyfile:ro
  postgres: # Must be identical to the .env POSTGRES_HOST variable
    image: postgres:12.1
    environment:
      POSTGRES_USER: ${POSTGRES_USER:?Required}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:?Required}
      POSTGRES_DB: ${POSTGRES_DB:?Required}
      DB_HOST: ${POSTGRES_HOST:?Required}
    volumes:
      - pgdata:/var/lib/postgresql/data
  postfix: # temporary
    image: arugifa/simplelogin-postfix:3.1.0-6
    ports:
      - "25:25"
    environment:
      POSTFIX_FQDN: ${EMAIL_DOMAIN}
      ALIASES_DEFAULT_DOMAIN: ${EMAIL_DOMAIN}
      DB_NAME: ${POSTGRES_DB}
      DB_HOST: ${POSTGRES_HOST}
      DB_USER: ${POSTGRES_USER}
      DB_PASSWORD: ${POSTGRES_PASSWORD}
      LETSENCRYPT_EMAIL: admin@sl.com
      EMAIL_HANDLER_HOST: email-handler # Must be identical to the service name
  webapp:
    build:
      context: .
      dockerfile: Dockerfile
    env_file:
      - .env
    environment:
      URL: localhost
      DB_URI: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:5432/${POSTGRES_DB}
  email-handler:
    build:
      context: .
      dockerfile: Dockerfile
      target: email-handler
    env_file:
      - .env
    depends_on:
      - webapp
      - postgres
    environment:
      DB_URI: "postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:5432/${POSTGRES_DB}"
      LOCAL_FILE_UPLOAD: "1"
volumes:
  pgdata: