hw4: finalize selenoid and ansible workflow with citrus tests

ansible/roles/ggr_gateway/templates/docker-compose.ggr.yml.j2

@@ -0,0 +1,46 @@
+services:
+  ggr:
+    image: "{{ ggr_image }}"
+    container_name: ggr
+    restart: unless-stopped
+    ports:
+      - "{{ ggr_gateway_port }}:4444"
+    volumes:
+      - "./quota:/etc/grid-router/quota:ro"
+    command:
+      - "-listen"
+      - ":4444"
+      - "-quotaDir"
+      - "/etc/grid-router/quota"
+      - "-guests-allowed"
+
+  ggr-ui:
+    image: "{{ ggr_ui_image }}"
+    container_name: ggr-ui
+    restart: unless-stopped
+    ports:
+      - "{{ ggr_ui_public_port }}:8888"
+    volumes:
+      - "./quota:/etc/grid-router/quota:ro"
+    command:
+      - "-listen"
+      - ":8888"
+      - "-quota-dir"
+      - "/etc/grid-router/quota"
+
+  nginx:
+    image: "{{ nginx_image }}"
+    container_name: grid-nginx
+    restart: unless-stopped
+    depends_on:
+      - ggr
+      - ggr-ui
+    ports:
+      - "{{ ggr_nginx_public_port }}:80"
+    volumes:
+      - "./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro"
+
+networks:
+  default:
+    name: "{{ selenoid_container_network }}"
+    external: true