version: '3.4'
services:
  authelia:
    image: clems4ever/authelia:latest
    # Used for Docker configs
    configs:
      - source: authelia
        target: /etc/authelia/config.yml
        uid: '0'
        gid: '0'
        mode: 0444
    environment:
      - NODE_TLS_REJECT_UNAUTHORIZED=0
    # Where the authelia volume is to be mounted. Mounted in a subdirectory to host both the users_database and storage at the same time.
    volumes:
      - authelia:/etc/authelia/volume
    networks:
      - overlay
    deploy:
      #Configure Authelia to automatically restart on failure.
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3
        window: 120s
      # Mode: global would start authelia on all available nodes, replicated limits it to how many replicas are configured.
      mode: replicated
      # How many replicas are wanted. Can be any number >0 up to however many nodes are available.
      replicas: 1
      placement:
        constraints: 
          - node.role == worker

#The volume for authelia needs to be configured. There are many drivers available. Such as local storage, ceph-rdb, nfs, cifs etc.
volumes:
  authelia:
    driver: default
    name: volume-authelia

networks:
  overlay:
    external: true

# This is needed if Docker configs are being used to provide Authelia with its configuration.
configs:
  authelia:
    external: true