no need to gzip here, reverse proxy will do it

nginx/nginx.conf

@@ -20,30 +20,30 @@ http {
     server_tokens off;
 
     # Gzip compression
-    gzip on;
-    gzip_types 
-        text/plain 
-        application/json 
-        application/javascript 
-        text/css 
-        text/xml 
-        application/xml 
-        application/xml+rss 
+    gzip off;
+    gzip_types
+        text/plain
+        application/json
+        application/javascript
+        text/css
+        text/xml
+        application/xml
+        application/xml+rss
         text/javascript;
 
     # Server block
     server {
-        listen 80; 
+        listen 80;
         server_name _;
-        
+
         include /etc/nginx/conf.d/redirects.conf;
 
         location /docs {
-            alias /usr/share/nginx/html/docs; 
+            alias /usr/share/nginx/html/docs;
             index index.html;
             try_files $uri $uri/ $uri.html =404;
         }
-        
+
         location = /favicon.ico {
             rewrite ^/favicon.ico$ /docs/favicon.ico;
         }