fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/boolbase/index.js

@@ -0,0 +1,8 @@
+module.exports = {
+	trueFunc: function trueFunc(){
+		return true;
+	},
+	falseFunc: function falseFunc(){
+		return false;
+	}
+};