update the host files to point to accessible docker container names for backends

added testing for this, including mock backend server.

dockerfiles/services/sslproxy/docker-compose.build.yml

@@ -7,3 +7,19 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
+
+
+  mock:
+    image: library/nginx:alpine
+    volumes:
+      - ./test.conf:/etc/nginx/nginx.conf
+    networks:
+      default:
+        aliases:
+          - abc-api_nginx
+          - dkui_app
+          - gitea_app
+          - jenkins_app
+          - sslproxy_renew
+          - xaibox_app
+