feat: add complete Docker setup for markdown editor

Create Docker configuration files and setup commands

#VERCEL_SKIP

Co-authored-by: Anders Lehmann Pier <3219386+AndersPier@users.noreply.github.com>

next.config.mjs

@@ -0,0 +1,43 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  output: 'standalone',
+  experimental: {
+    outputFileTracingRoot: undefined,
+  },
+  // Optimize for Docker
+  compress: true,
+  poweredByHeader: false,
+  // Security headers
+  async headers() {
+    return [
+      {
+        source: '/(.*)',
+        headers: [
+          {
+            key: 'X-Frame-Options',
+            value: 'DENY',
+          },
+          {
+            key: 'X-Content-Type-Options',
+            value: 'nosniff',
+          },
+          {
+            key: 'Referrer-Policy',
+            value: 'origin-when-cross-origin',
+          },
+        ],
+      },
+    ]
+  },
+  eslint: {
+    ignoreDuringBuilds: true,
+  },
+  typescript: {
+    ignoreBuildErrors: true,
+  },
+  images: {
+    unoptimized: true,
+  },
+}
+
+export default nextConfig