Updated nextcloud to use docker network and caddy

nextcloud/roles/nextcloud/tasks/main.yaml

@@ -24,11 +24,8 @@
       POSTGRES_PASSWORD: "{{ db_pass }}"
       POSTGRES_HOST: "{{ db_host }}"
       REDIS_HOST: "redis"
-    links:
-      - "postgres:db"
-      - "redis:redis"
-    published_ports:
-      - "127.0.0.1:9000:9000"
+    networks:
+      - name: "{{ docker_network }}"
     volumes:
       - "/var/lib/{{ host_directory }}:/var/www/html"