Add middleware from file provider so we can change it without restart

docker-compose.yml → compose.yml

@@ -33,6 +33,7 @@ services:
     labels:
       traefik.http.routers.mattermost-app.entrypoints: websecure
       traefik.http.routers.mattermost-app.rule: Host(`team.picasoft.net`)
+      traefik.http.routers.mattermost-app.middlewares: mattermost@file
       traefik.http.services.mattermost-app.loadbalancer.server.port: 8065
       traefik.enable: true
     networks: