Add Dockerfile and finalize build config

svelte.config.js

@@ -1,15 +1,13 @@
-import adapter from '@sveltejs/adapter-auto';
+import adapter from '@sveltejs/adapter-node';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
 
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
+	preprocess: vitePreprocess(),
 	compilerOptions: {
-		// Force runes mode for the project, except for libraries. Can be removed in svelte 6.
-		runes: ({ filename }) => (filename.split(/[/\\]/).includes('node_modules') ? undefined : true)
+		runes: true
 	},
 	kit: {
-		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
 		adapter: adapter()
 	}
 };