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/cli/docs/infra/process-cloud-ide-provider.d.ts

@@ -0,0 +1,5 @@
+import type { CloudIdeProvider } from '../definitions.js';
+import type { CloudIde } from '../domain/cloud-ide.js';
+export declare class ProcessCloudIdeProvider implements CloudIdeProvider {
+    readonly name: CloudIde | null;
+}

node_modules/astro/dist/cli/docs/infra/process-cloud-ide-provider.js

@@ -0,0 +1,6 @@
+class ProcessCloudIdeProvider {
+  name = Boolean(process.env.GITPOD_REPO_ROOT) ? "gitpod" : null;
+}
+export {
+  ProcessCloudIdeProvider
+};