Syncthing: use traefik as reverse proxy

roles/server/syncthing.nix

@@ -16,4 +16,23 @@
 			};
 		};
 	};
+
+	# Set up traefik as the reverse proxy for syncthing
+	services.traefik = {
+		dynamicConfigOptions = {
+			http = {
+				routers = {
+					syncthing-subpath = {
+						middlewares = [ "syncthing-strip-prefix" ];
+						rule = "PathPrefix(`/syncthing/`)";
+						service = "syncthing";
+					};
+				};
+				services.syncthing.loadBalancer.servers = [
+					{ url = "http://localhost:8384"; }
+				];
+				middlewares.syncthing-strip-prefix.stripprefix.prefixes = "/syncthing";
+			};
+		};
+	};
 }