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/astro/dist/actions/vite-plugin-actions.d.ts

@@ -0,0 +1,15 @@
+import type fsMod from 'node:fs';
+import type { Plugin as VitePlugin } from 'vite';
+import type { BuildInternals } from '../core/build/internal.js';
+import type { StaticBuildOptions } from '../core/build/types.js';
+import type { AstroSettings } from '../types/astro.js';
+/**
+ * This plugin is used to retrieve the final entry point of the bundled actions.ts file
+ * @param opts
+ * @param internals
+ */
+export declare function vitePluginActionsBuild(opts: StaticBuildOptions, internals: BuildInternals): VitePlugin;
+export declare function vitePluginActions({ fs, settings, }: {
+    fs: typeof fsMod;
+    settings: AstroSettings;
+}): VitePlugin;