Add synapse-admin

Useful to see what's going on on the server

ansible/roles/pve_docker/files/synapse/docker-compose.yml

@@ -31,3 +31,13 @@ services:
       - POSTGRES_INITDB_ARGS=--encoding=UTF-8 --lc-collate=C --lc-ctype=C
     volumes:
       - /mnt/tank/dbs/postgres/synapse:/var/lib/postgresql/data
+
+  admin:
+    image: awesometechnologies/synapse-admin:latest
+    restart: unless-stopped
+    labels:
+      - traefik.enable=true
+      - traefik.http.routers.synapse-admin.rule=Host(`matrix.jakehoward.tech`) && PathPrefix(`/admin`)
+      - traefik.http.routers.synapse-admin.tls.certresolver=le
+      - traefik.http.middlewares.synapse-admin-path.stripprefix.prefixes=/admin
+      - traefik.http.routers.synapse-admin.middlewares=synapse-admin-path@docker