docker-compose.yml

version: "3.3"
services:

  proxy:
    image: traefik:v2.3
    networks:
      - ${TRAEFIK_PUBLIC_NETWORK?Variable not set}
      - default
    volumes:
      # Add Docker as a mounted valume, so that traefik can read the labels of other services
      - /var/run/docker.sock:/var/run/docker.sock:ro
    command:
      # Enable Docker in Traefik, so that it reads labels from Docker services
      - --providers.docker
      # Add a constraint to only use services with the label for this stack
      # from the env var TRAEFIK_TAG
      - --providers.docker.constraints=Label(`traefik.constraint-label-stack`, `${TRAEFIK_TAG?Variable not set}`)
      # Do not expose all Docker services, only the ones explicitly exposed
      - --providers.docker.exposedbydefault=false
      # Enable the access log, with HTTP requests
      - --accesslog
      # Enable the Traefik log, for configurations and errors
      - --log
      # Enable the Dashboard and API
      - --api
    labels:
      # Enable Traefik for this service, to make it available in the public network
      - traefik.enable=true
      # Use the traefik-public network (declared below)
      - traefik.docker.network=${TRAEFIK_PUBLIC_NETWORK?Variable not set}
      # Use the custom label "traefik.constraint-label=traefik-public"
      # This public Traefik will only use services with this label
      - traefik.constraint-label=${TRAEFIK_PUBLIC_TAG?Variable not set}
      # traefik-http set up only to use the middleware to redirect to https
      - traefik.http.middlewares.${STACK_NAME?Variable not set}-https-redirect.redirectscheme.scheme=https
      - traefik.http.middlewares.${STACK_NAME?Variable not set}-https-redirect.redirectscheme.permanent=true
      # Handle host with and without "www" to redirect to only one of them
      # Uses environment variable DOMAIN
      # To disable www redirection remove the Host() you want to discard, here and
      # below for HTTPS
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-http.rule=Host(`${DOMAIN?Variable not set}`) || Host(`www.${DOMAIN?Variable not set}`)
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-http.entrypoints=http
      # traefik-https the actual router using HTTPS
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-https.rule=Host(`${DOMAIN?Variable not set}`) || Host(`www.${DOMAIN?Variable not set}`)
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-https.entrypoints=https
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-https.tls=true
      # Use the "le" (Let's Encrypt) resolver created below
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-https.tls.certresolver=le
      # Define the port inside of the Docker service to use
      - traefik.http.services.${STACK_NAME?Variable not set}-proxy.loadbalancer.server.port=80
      # Handle domain with and without "www" to redirect to only one
      # To disable www redirection remove the next line
      - traefik.http.middlewares.${STACK_NAME?Variable not set}-www-redirect.redirectregex.regex=^https?://(www.)?(${DOMAIN?Variable not set})/(.*)
      # Redirect a domain with www to non-www
      # To disable it remove the next line
      - traefik.http.middlewares.${STACK_NAME?Variable not set}-www-redirect.redirectregex.replacement=https://${DOMAIN?Variable not set}/$${3}
      # Redirect a domain without www to www
      # To enable it remove the previous line and uncomment the next
      # - traefik.http.middlewares.${STACK_NAME}-www-redirect.redirectregex.replacement=https://www.${DOMAIN}/$${3}
      # Middleware to redirect www, to disable it remove the next line
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-https.middlewares=${STACK_NAME?Variable not set}-www-redirect
      # Middleware to redirect www, and redirect HTTP to HTTPS
      # to disable www redirection remove the section: ${STACK_NAME?Variable not set}-www-redirect,
      - traefik.http.routers.${STACK_NAME?Variable not set}-proxy-http.middlewares=${STACK_NAME?Variable not set}-www-redirect,${STACK_NAME?Variable not set}-https-redirect

  backend:
    image: '${DOCKER_IMAGE_BACKEND?Variable not set}:${TAG-latest}'
    env_file:
      - .env
    environment:
      - SERVER_NAME=${DOMAIN?Variable not set}
      - SERVER_HOST=https://${DOMAIN?Variable not set}
      # Allow explicit env var override for tests
    build:
      context: ./backend
      dockerfile: backend.dockerfile
      args:
        INSTALL_DEV: ${INSTALL_DEV-false}
    restart: always
    labels:
      - traefik.enable=true
      - traefik.constraint-label-stack=${TRAEFIK_TAG?Variable not set}
      - traefik.http.routers.${STACK_NAME?Variable not set}-backend-http.rule=PathPrefix(`/api`) || PathPrefix(`/docs`) || PathPrefix(`/redoc`)
      - traefik.http.services.${STACK_NAME?Variable not set}-backend.loadbalancer.server.port=80

    networks:
      - traefik-public

  frontend:
    image: '${DOCKER_IMAGE_FRONTEND?Variable not set}:${TAG-latest}'
    env_file:
      - .env
    build:
      context: ./frontend
      args:
        FRONTEND_ENV: ${FRONTEND_ENV-production}
        API_URL: ${API_URL}
    restart: always
    labels:
       - traefik.enable=true
       - traefik.constraint-label-stack=${TRAEFIK_TAG?Variable not set}
       - traefik.http.routers.${STACK_NAME?Variable not set}-frontend-http.rule=PathPrefix(`/`)
       - traefik.http.services.${STACK_NAME?Variable not set}-frontend.loadbalancer.server.port=80
    networks:
      - traefik-public

volumes:
  # Create a volume to store the certificates, there is a constraint to make sure
  # Traefik is always deployed to the same Docker node with the same volume containing
  # the HTTPS certificates
  traefik-public-certificates:

networks:
  traefik-public:
    # Allow setting it to false for testing
    external: ${TRAEFIK_PUBLIC_NETWORK_IS_EXTERNAL-true}