Add rules for compression and cache expiry

Refs flarum/core#514.

scripts/environment.sh

@@ -49,6 +49,40 @@ block="
         location ~ /\.ht {
             deny all;
         }
+
+        location ~* \.html$ {
+            expires -1;
+        }
+
+        location ~* \.(css|js|gif|jpe?g|png)$ {
+            expires 1M;
+            add_header Pragma public;
+            add_header Cache-Control \"public, must-revalidate, proxy-revalidate\";
+        }
+
+        gzip on;
+        gzip_http_version 1.1;
+        gzip_vary on;
+        gzip_comp_level 6;
+        gzip_proxied any;
+        gzip_types application/atom+xml \
+                   application/javascript \
+                   application/json \
+                   application/vnd.ms-fontobject \
+                   application/x-font-ttf \
+                   application/x-web-app-manifest+json \
+                   application/xhtml+xml \
+                   application/xml \
+                   font/opentype \
+                   image/svg+xml \
+                   image/x-icon \
+                   text/css \
+                   text/html \
+                   text/plain \
+                   text/xml;
+        gzip_buffers 16 8k;
+        gzip_disable "MSIE [1-6]\.(?!.*SV1)";
+
     }
 "