tests: factor out base nginx-proxy config

test/test_dockergen/test_dockergen.base.yml

@@ -0,0 +1,27 @@
+volumes:
+  nginx_conf:
+
+
+services:
+  nginx-proxy-nginx:
+    image: nginx
+    container_name: nginx
+    volumes:
+      - nginx_conf:/etc/nginx/conf.d:ro
+
+  nginx-proxy-dockergen:
+    image: nginxproxy/docker-gen
+    command: -notify-sighup nginx -watch /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
+    volumes:
+      - /var/run/docker.sock:/tmp/docker.sock:ro
+      - ../../nginx.tmpl:/etc/docker-gen/templates/nginx.tmpl
+      - nginx_conf:/etc/nginx/conf.d
+
+  web:
+    image: web
+    container_name: whoami
+    expose:
+      - "80"
+    environment:
+      WEB_PORTS: "80"
+      VIRTUAL_HOST: whoami.nginx.container.docker