docker-compose example

docker-compose.yml

That is an example of one of our docker-compose.yml files.

version: '3.3'
services:

  # ── nginx ── TLS termination + reverse proxy ────────────────────────────────
  # See /etc/nginx/sites-available/blog.iboard.cc

  # ── Phoenix application ─────────────────────────────────────────────────────
  web:
    image: iboard/blog:latest
    env_file:
      - .env
    volumes:
      - ./data/uploads:/app/uploads
      - ./data/docs:/app/lib/w_app_core-0.1.0/priv/static/docs
      - ./data/images:/app/lib/w_app_core-0.1.0/priv/static/images
    ports:
      - ${EXPOSE_PORT}:${PORT}
    networks:
      - instance_network
    depends_on:
      - db
    restart: unless-stopped

  # ── PostgreSQL ──────────────────────────────────────────────────────────────
  db:
    image: postgres:16-alpine
    env_file:
      - .env
    volumes:
      - ./data/postgres:/var/lib/postgresql/data
    expose:
      - "5432"
    networks:
      - instance_network
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U ${PGUSER}"]
      interval: 10s
      timeout: 5s
      retries: 5
    restart: unless-stopped

networks:
  instance_network:
    driver: bridge
    ipam:
      config:
        # A /29 subnet provides 8 IP addresses, which is perfectly small for two containers
        - subnet: ${NETWORK_SUBNET}