redmine: enable gzip compression in nginx vhost

CHANGELOG.md

@@ -13,6 +13,7 @@ The **patch** part changes incrementally at each release.
 ### Added
 * apache: add server status suffix in VHost (and default site) if missing
 * nginx: add server status suffix in VHost (and default site) if missing
+* redmine: enable gzip compression in nginx vhost
 
 ### Changed
 * evocheck : version 19.04 from upstream

redmine/templates/nginx.conf.j2

@@ -22,6 +22,14 @@ server {
 
         include /etc/nginx/snippets/letsencrypt[.]conf;
 
+        gzip on;
+        gzip_disable "msie6";
+        gzip_vary on;
+        gzip_proxied any;
+        gzip_comp_level 6;
+        gzip_http_version 1.1;
+        gzip_types text/plain text/css application/json application/x-javascript application/javascript text/xml application/xml application/xml+rss text/javascript;
+
         location / {
                 if (!-f /home/{{ redmine_user }}/run/puma.pid) {
                         return 503;