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/svgo/plugins/removeXMLNS.js

@@ -0,0 +1,27 @@
+export const name = 'removeXMLNS';
+export const description =
+  'removes xmlns attribute (for inline svg, disabled by default)';
+
+/**
+ * Remove the xmlns attribute when present.
+ *
+ * @example
+ * <svg viewBox="0 0 100 50" xmlns="http://www.w3.org/2000/svg">
+ *   ↓
+ * <svg viewBox="0 0 100 50">
+ *
+ * @author Ricardo Tomasi
+ *
+ * @type {import('../lib/types.js').Plugin}
+ */
+export const fn = () => {
+  return {
+    element: {
+      enter: (node) => {
+        if (node.name === 'svg') {
+          delete node.attributes.xmlns;
+        }
+      },
+    },
+  };
+};