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/vite-plugin-utils/index.js

@@ -0,0 +1,45 @@
+import { fileURLToPath } from "node:url";
+import ancestor from "common-ancestor-path";
+import {
+  appendExtension,
+  appendForwardSlash,
+  removeLeadingForwardSlashWindows
+} from "../core/path.js";
+import { viteID } from "../core/util.js";
+function getFileInfo(id, config) {
+  const sitePathname = appendForwardSlash(
+    config.site ? new URL(config.base, config.site).pathname : config.base
+  );
+  const fileId = id.split("?")[0];
+  let fileUrl = fileId.includes("/pages/") ? fileId.replace(/^.*?\/pages\//, sitePathname).replace(/(?:\/index)?\.(?:md|markdown|mdown|mkdn|mkd|mdwn|astro)$/, "") : void 0;
+  if (fileUrl && config.trailingSlash === "always") {
+    fileUrl = appendForwardSlash(fileUrl);
+  }
+  if (fileUrl && config.build.format === "file") {
+    fileUrl = appendExtension(fileUrl, "html");
+  }
+  return { fileId, fileUrl };
+}
+function normalizeFilename(filename, root) {
+  if (filename.startsWith("/@fs")) {
+    filename = filename.slice("/@fs".length);
+  } else if (filename.startsWith("/") && !ancestor(filename, fileURLToPath(root))) {
+    const url = new URL("." + filename, root);
+    filename = viteID(url);
+  }
+  return removeLeadingForwardSlashWindows(filename);
+}
+const postfixRE = /[?#].*$/s;
+function cleanUrl(url) {
+  return url.replace(postfixRE, "");
+}
+const specialQueriesRE = /(?:\?|&)(?:url|raw|direct)(?:&|$)/;
+function hasSpecialQueries(id) {
+  return specialQueriesRE.test(id);
+}
+export {
+  cleanUrl,
+  getFileInfo,
+  hasSpecialQueries,
+  normalizeFilename
+};