Minimal example config for docker swarm

Currently missing: reverse proxy, since I am using traefik and I do not have it fully working yet with the internal traefik tools.

docker-compose.swarm.minimal.yml

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+version: '3.4'
+services:
+  authelia:
+    image: clems4ever/authelia:latest
+    # Used for Docker configs
+    configs:
+      - source: authelia.v3
+        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