Nextcloud high performance backend with nginx proxy_pass

should probably look something like this, placed on the target service/container:

labels:
  - traefik.http.routers.router1.rule=Host(`myserver.domain.invalid`) && PathPrefix(`/standalone-signaling/`)
  - traefik.http.routers.router1.middlewares=myStrip
  - traefik.http.middlewares.myStrip.stripprefix.prefixes=/standalone-signaling
  - traefik.http.services.router1.loadbalancer.server.port=8080

Note this uses the container IP as target, not localhost, should be available within a Docker network.