(misc): Added configuration files.

src/tic-tac-toe/.dockerignore

@@ -0,0 +1,2 @@
+/dist
+/node_modules

src/tic-tac-toe/entrypoint.sh

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+#!/bin/sh
+
+set -e
+set -x
+
+# run the CMD [ ... ] from the dockerfile
+exec "$@"

src/tic-tac-toe/vite.config.js

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+import { defineConfig } from 'vite';
+import tsconfigPaths from 'vite-tsconfig-paths';
+import nodeExternals from 'rollup-plugin-node-externals';
+import path from 'node:path';
+import fs from 'node:fs';
+
+function collectDeps(...pkgJsonPaths) {
+	const allDeps = new Set();
+	for (const pkgPath of pkgJsonPaths) {
+		const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf-8'));
+		for (const dep of Object.keys(pkg.dependencies || {})) {
+			allDeps.add(dep);
+		}
+		for (const peer of Object.keys(pkg.peerDependencies || {})) {
+			allDeps.add(peer);
+		}
+	}
+	return Array.from(allDeps);
+};
+
+const externals = collectDeps(
+	'./package.json',
+	'../@shared/package.json',
+);
+
+export default defineConfig({
+	root: __dirname,
+	define: {
+		__SERVICE_NAME: '"chat"',
+	},
+	// service root
+	plugins: [tsconfigPaths(), nodeExternals()],
+	build: {
+		ssr: true,
+		outDir: 'dist',
+		emptyOutDir: true,
+		lib: {
+			entry: path.resolve(__dirname, process.env.VITE_ENTRYPOINT ?? 'src/run.ts'),
+			// adjust main entry
+			formats: ['cjs'],
+			// CommonJS for Node.js
+			fileName: () => 'index.js',
+		},
+		rollupOptions: {
+			external: externals,
+		},
+		target: 'node22',
+		// or whatever Node version you use
+		sourcemap: true,
+		minify: false,
+		// for easier debugging
+	},
+});