Minimize js and css files in docker build

minimize.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+which uglifycss
+
+#minification of JS files
+cd public/js || exit
+for f in *.js; do
+  case "$f" in
+    *"min.js") ;;
+    *) uglifyjs "$f" > "${f%.js}".min.js && sed -i "s/$f/${f%.js}.min.js/" ../index.html
+  esac
+done
+
+#minification of CSS files
+cd ../css || exit
+for f in *.css; do
+  case "$f" in
+    *"min.css") ;;
+    *) uglifycss --output "${f%.css}".min.css "$f" && sed -i "s/$f/${f%.css}.min.css/" ../index.html
+  esac
+done