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/container/pipeline.d.ts

@@ -0,0 +1,13 @@
+import { type HeadElements, Pipeline, type TryRewriteResult } from '../core/base-pipeline.js';
+import type { ComponentInstance } from '../types/astro.js';
+import type { RewritePayload } from '../types/public/common.js';
+import type { RouteData, SSRResult } from '../types/public/internal.js';
+export declare class ContainerPipeline extends Pipeline {
+    #private;
+    static create({ logger, manifest, renderers, resolve, serverLike, streaming, }: Pick<ContainerPipeline, 'logger' | 'manifest' | 'renderers' | 'resolve' | 'serverLike' | 'streaming'>): ContainerPipeline;
+    componentMetadata(_routeData: RouteData): Promise<SSRResult['componentMetadata']> | void;
+    headElements(routeData: RouteData): Promise<HeadElements> | HeadElements;
+    tryRewrite(payload: RewritePayload, request: Request): Promise<TryRewriteResult>;
+    insertRoute(route: RouteData, componentInstance: ComponentInstance): void;
+    getComponentByRoute(routeData: RouteData): Promise<ComponentInstance>;
+}