add traefik config to nexctcloud container

docker-containers/nextcloud/docker-compose.yml

@@ -30,9 +30,21 @@ services:
       - LETSENCRYPT_HOST=cloud.cttue.de
     volumes:
       - ./nextcloud-data:/var/www/html:z
+    labels:
+      - traefik.enable=true
+      - traefik.docker.network=traefik
+      - traefik.http.routers.cloud.entrypoints=web-secure
+      - traefik.http.routers.cloud.service=cloud
+      - traefik.http.routers.cloud.rule=Host(`cloud.cttue.de`)
+      - traefik.http.routers.cloud.tls=true
+      - traefik.http.routers.cloud.tls.certResolver=default
+      - traefik.http.routers.cloud.tls.domains[0]=cttue.de
+      - traefik.http.routers.cloud.tls.domains[0].sans=cloud.cttue.de
+      - traefik.http.services.cloud.loadbalancer.server.port=80
     networks:
       cttue_web_services:
       backend:
+      traefik:
     depends_on:
       - nc_db
 
@@ -41,4 +53,5 @@ networks:
     external: true
   # Internal network for communication with MySQL
   backend:
-
+  traefik:
+    external: true