Docker compose + Traefik labels

services:
  app:
    image: ghcr.io/example/app:latest
    restart: unless-stopped
    environment:
      - NODE_ENV=production
    healthcheck:
      test: ["CMD", "wget", "-q", "--spider", "http://localhost:3000/api/health"]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 30s
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.app.rule=Host(`app.example.com`)"
      - "traefik.http.routers.app.entrypoints=websecure"
      - "traefik.http.routers.app.tls.certresolver=letsencrypt"
      - "traefik.http.services.app.loadbalancer.server.port=3000"
    networks:
      - traefik
      - app

  db:
    image: postgres:16-alpine
    restart: unless-stopped
    environment:
      POSTGRES_PASSWORD_FILE: /run/secrets/db_password
    volumes:
      - db_data:/var/lib/postgresql/data
    secrets:
      - db_password
    networks:
      - app

networks:
  traefik:
    external: true
  app:
    driver: bridge

volumes:
  db_data:

secrets:
  db_password:
    file: ./secrets/db_password.txt

services:
  traefik:
    image: traefik:v3.2
    restart: unless-stopped
    command:
      - --providers.docker=true
      - --providers.docker.exposedbydefault=false
      - --entrypoints.web.address=:80
      - --entrypoints.websecure.address=:443
      - --entrypoints.web.http.redirections.entrypoint.to=websecure
      - --entrypoints.web.http.redirections.entrypoint.scheme=https
      - [email protected]
      - --certificatesresolvers.letsencrypt.acme.storage=/letsencrypt/acme.json
      - --certificatesresolvers.letsencrypt.acme.tlschallenge=true
      - --log.level=INFO
      - --accesslog=true
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ./letsencrypt:/letsencrypt
    networks:
      - traefik

networks:
  traefik:
    external: true