feat: Implement frontend asset build process and update Docker configuration

- Added a new build script using esbuild to bundle JavaScript and CSS assets, including Tailwind CSS and Font Awesome.
- Updated the Dockerfile to include a multi-stage build process for frontend assets, ensuring efficient image creation.
- Enhanced GitHub workflows to automate the installation of Node.js dependencies and build frontend assets during CI/CD.
- Introduced a .gitignore entry for the dist directory to prevent unnecessary files from being tracked.
- Improved caching and content type handling for static files served by the application.

build.js

@@ -0,0 +1,122 @@
+import * as esbuild from 'esbuild';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import { execSync } from 'child_process';
+import fs from 'fs';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const isWatch = process.argv.includes('--watch');
+
+// Ensure the dist directory exists
+const distDir = path.join(__dirname, 'static', 'dist');
+if (!fs.existsSync(distDir)) {
+  fs.mkdirSync(distDir, { recursive: true });
+}
+
+// Copy Font Awesome files
+const fontAwesomeSrcDir = path.join(__dirname, 'node_modules', '@fortawesome', 'fontawesome-free');
+const fontAwesomeDestDir = path.join(distDir, 'fontawesome');
+
+// Copy CSS files
+const cssFiles = [
+  'css/all.min.css',
+  'css/fontawesome.min.css',
+  'css/solid.min.css',
+  'css/regular.min.css',
+  'css/brands.min.css'
+];
+
+cssFiles.forEach(file => {
+  const srcFile = path.join(fontAwesomeSrcDir, file);
+  const destFile = path.join(fontAwesomeDestDir, file);
+  const destDir = path.dirname(destFile);
+  
+  if (!fs.existsSync(destDir)) {
+    fs.mkdirSync(destDir, { recursive: true });
+  }
+  
+  if (fs.existsSync(srcFile)) {
+    fs.copyFileSync(srcFile, destFile);
+  }
+});
+
+// Copy webfonts
+const webfontsSrcDir = path.join(fontAwesomeSrcDir, 'webfonts');
+const webfontsDestDir = path.join(fontAwesomeDestDir, 'webfonts');
+
+if (!fs.existsSync(webfontsDestDir)) {
+  fs.mkdirSync(webfontsDestDir, { recursive: true });
+}
+
+fs.readdirSync(webfontsSrcDir).forEach(file => {
+  fs.copyFileSync(
+    path.join(webfontsSrcDir, file),
+    path.join(webfontsDestDir, file)
+  );
+});
+
+const commonConfig = {
+  sourcemap: true,
+  minify: true,
+  bundle: true,
+  platform: 'browser',
+  target: ['es2020'],
+};
+
+async function buildTailwind() {
+  console.log('Building Tailwind CSS...');
+  execSync('npx tailwindcss -i ./static/css/app.css -o ./static/dist/app.css --minify');
+}
+
+async function build() {
+  try {
+    // Build vendor JavaScript bundle (CDN dependencies)
+    await esbuild.build({
+      ...commonConfig,
+      entryPoints: ['static/js/vendor.js'],
+      outfile: 'static/dist/vendor.js',
+      format: 'iife',
+    });
+
+    // Build application JavaScript
+    await esbuild.build({
+      ...commonConfig,
+      entryPoints: ['static/js/app.js'],
+      outfile: 'static/dist/app.js',
+      format: 'iife',
+    });
+
+    // Build initialization JavaScript
+    await esbuild.build({
+      ...commonConfig,
+      entryPoints: ['static/js/init.js'],
+      outfile: 'static/dist/init.js',
+      format: 'iife',
+    });
+
+    // Build CSS with Tailwind
+    await buildTailwind();
+
+    console.log('Build completed successfully!');
+  } catch (error) {
+    console.error('Build failed:', error);
+    process.exit(1);
+  }
+}
+
+if (isWatch) {
+  // Watch mode
+  console.log('Starting watch mode...');
+  const ctx = await esbuild.context(commonConfig);
+  await ctx.watch();
+  
+  // Watch Tailwind CSS
+  execSync('npx tailwindcss -i ./static/css/app.css -o ./static/dist/app.css --watch');
+  
+  console.log('Watching for changes...');
+} else {
+  // Single build
+  build();
+}