update nginx conf

nginx.conf

@@ -21,59 +21,17 @@ server {
   access_log /app/log/nginx.access.log;
   error_log /app/log/nginx.error.log info;
 
-  # this rewrites all the requests to the maintenance.html
-  # page if it exists in the doc root. This is for capistrano's
-  # disable web task
-  if (-f $document_root/maintenance.html) {
-    rewrite  ^(.*)$  /maintenance.html last;
-    break;
-  }
-
   location / {
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header Host $host;
-
-    # If the file exists as a static file serve it directly without
-    # running all the other rewrite tests on it
-    if (-f $request_filename) {
-      break;
-    }
-
-    # check for index.html for directory index
-    # if it's there on the filesystem then rewrite
-    # the url to add /index.html to the end of it
-    # and then break to send it to the next config rules.
-    if (-f $request_filename/index.html) {
-      rewrite (.*) $1/index.html break;
-    }
+    set $upstream http://app:3000;
 
-    # this is the meat of the rack page caching config
-    # it adds .html to the end of the url and then checks
-    # the filesystem for that file. If it exists, then we
-    # rewrite the url to have explicit .html on the end
-    # and then send it on its way to the next config rule.
-    # if there is no file on the fs then it sets all the
-    # necessary headers and proxies to our upstream pumas
-    if (-f $request_filename.html) {
-      rewrite (.*) $1.html break;
-    }
-
-    if (!-f $request_filename) {
-      proxy_pass http://app;
-      break;
-    }
-  }
-
-  # Now this supposedly should work as it gets the filenames with querystrings that Rails provides.
-  # BUT there's a chance it could break the ajax calls.
-  location ~* \.(ico|css|gif|jpe?g|png|js)(\?[0-9]+)?$ {
-     expires max;
-     break;
-  }
+    proxy_pass $upstream;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
 
-  # Error pages
-  # error_page 500 502 503 504 /500.html;
-  location = /500.html {
-    root /app/current/public;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_http_version 1.1;
   }
 }