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/assets/endpoint/node.js

@@ -0,0 +1,56 @@
+import { outDir, serverDir } from "astro:assets";
+import { readFile } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { isParentDirectory } from "@astrojs/internal-helpers/path";
+import { handleImageRequest } from "./shared.js";
+async function loadLocalImage(src, url) {
+  const outDirURL = resolveOutDir();
+  const idx = url.pathname.indexOf("/_image");
+  if (idx > 0) {
+    src = src.slice(idx);
+  }
+  if (!URL.canParse("." + src, outDirURL)) {
+    return void 0;
+  }
+  const fileUrl = new URL("." + src, outDirURL);
+  if (fileUrl.protocol !== "file:") {
+    return void 0;
+  }
+  if (!isParentDirectory(fileURLToPath(outDirURL), fileURLToPath(fileUrl))) {
+    return void 0;
+  }
+  try {
+    return await readFile(fileUrl);
+  } catch {
+    return void 0;
+  }
+}
+const GET = async ({ request }) => {
+  try {
+    return await handleImageRequest({ request, loadLocalImage });
+  } catch (err) {
+    console.error("Could not process image request:", err);
+    return new Response("Internal Server Error", {
+      status: 500
+    });
+  }
+};
+function resolveOutDir() {
+  const serverDirPath = fileURLToPath(serverDir);
+  const rel = path.relative(serverDirPath, fileURLToPath(outDir));
+  const serverFolder = path.basename(serverDirPath);
+  let serverEntryFolderURL = path.dirname(import.meta.url);
+  while (!serverEntryFolderURL.endsWith(serverFolder)) {
+    serverEntryFolderURL = path.dirname(serverEntryFolderURL);
+  }
+  const serverEntryURL = serverEntryFolderURL + "/entry.mjs";
+  const outDirURL = new URL(appendForwardSlash(rel), serverEntryURL);
+  return outDirURL;
+}
+function appendForwardSlash(pth) {
+  return pth.endsWith("/") ? pth : pth + "/";
+}
+export {
+  GET
+};