ci: ensure all compose files are valid compose v2 + formatting

test/stress_tests/test_deleted_cert/docker-compose.yml

@@ -1,15 +1,17 @@
-web:
-  image: web
-  expose:
-  - "81"
-  environment:
-    WEB_PORTS: 81
-    VIRTUAL_HOST: web.nginx-proxy
+version: "2"
 
+services:
+  web:
+    image: web
+    expose:
+      - "81"
+    environment:
+      WEB_PORTS: 81
+      VIRTUAL_HOST: web.nginx-proxy
 
-reverseproxy:
-  image: nginxproxy/nginx-proxy:test
-  container_name: reverseproxy
-  volumes:
-  - /var/run/docker.sock:/tmp/docker.sock:ro
-  - ./tmp_certs:/etc/nginx/certs:ro
+  reverseproxy:
+    image: nginxproxy/nginx-proxy:test
+    container_name: reverseproxy
+    volumes:
+      - /var/run/docker.sock:/tmp/docker.sock:ro
+      - ./tmp_certs:/etc/nginx/certs:ro

test/stress_tests/test_unreachable_network/docker-compose.yml

@@ -32,4 +32,3 @@ services:
     environment:
       WEB_PORTS: 82
       VIRTUAL_HOST: webB.nginx-proxy
-