.devcontainer/docker-compose.yml

version: "3"

services:
  app:
    build:
      context: ..
      dockerfile: .devcontainer/Dockerfile

    volumes:
      - ..:/workspace:cached

    # Overrides default command so things don't shut down after the process ends.
    command: sleep infinity

    # Runs app on the same network as the database container, allows "forwardPorts" in devcontainer.json function.
    network_mode: service:db

  db:
    image: postgres:latest
    restart: unless-stopped
    volumes:
      - postgres-data:/var/lib/postgresql/data
    environment:
      POSTGRES_DB: app
      POSTGRES_USER: app_user
      POSTGRES_PASSWORD: app_password

    # Add "forwardPorts": ["5432"] to **devcontainer.json** to forward PostgreSQL locally.
    # (Adding the "ports" property to this file will not forward from a Codespace.)

volumes:
  postgres-data: