added working nginx configuration

frontend/nginx/nginx.conf

@@ -1,15 +1,19 @@
 server {
     listen 80;
+
     location / {
         root   /usr/share/nginx/html;
         index  index.html index.htm;
         # to redirect all the requests to index.html, 
         # useful when you are using react-router
         try_files $uri /index.html; 
-        proxy_pass http://localhost:5000
     }
+
+    location /api {
+        # include uwsgi_params;
+        # uwsgi_pass http://backend-prod:5000;
+        proxy_pass http://backend-prod:5000;
+    }
+
     error_page   500 502 503 504  /50x.html;
-    location = /50x.html {
-        root   /usr/share/nginx/html;
-    }
 }