indentation issues

docker-compose.yml

@@ -1,7 +1,13 @@
 services:
   app:
-  build: .
-  container_name: pmt
-  ports:
-    - "8080:8080"
-  restart: unless-stopped
+    build: .
+    container_name: pmt
+    ports:
+      - "8080:8080"
+    restart: unless-stopped
+    networks:
+      - proxy-network
+
+networks:
+  proxy-network:
+    external: true