compress static files in parallel

Author: thestinger

process-static

@@ -34,5 +34,4 @@ find static_tmp -name '*.html' -exec html-minifier --collapse-whitespace \
 
 find static_tmp -name '*.xml' -exec xmllint --noblanks {} --output {} \;
 find static_tmp -regex '.+\.\(css\|html\|ico\|js\|json\|svg\|txt\|webmanifest\|xml\)' \
-    -exec zopfli {} \; -exec touch -r {} {}.gz \; \
-    -exec brotli -k {} \;
+    parallel "brotli -k {}; zopfli {} && touch -r {} {}.gz"