make VILLASnode web mockup available

Dockerfile.nginx

 FROM nginx:stable-alpine
 
 COPY etc/nginx/villas.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 8080

docker-compose.yml

@@ -32,6 +32,7 @@ services:
     ports:
       - "80:80"
       - "443:443"
+      - "8080:8080"
 
   # The MongoDB database for the VILLASweb backend
   database:

etc/nginx/villas.conf

@@ -34,3 +34,15 @@ server {
     proxy_pass http://frontend:5000/;
   }
 }
+
+server {
+  listen      8080;
+  server_name Mockup;
+
+  location / {
+    proxy_pass http://node/;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+  }
+}