Update Dockerfile, docker-compose, and package.json; add versioning script and styles for version display

Fix #21

build.js

@@ -0,0 +1,17 @@
+const fs = require('fs');
+const path = require('path');
+
+// Generate version number with timestamp
+const version = new Date().toISOString().replace(/[-:.]/g, '').slice(0, 15);
+
+// Read the HTML file
+const indexPath = path.join(__dirname, 'public', 'index.html');
+let indexHtml = fs.readFileSync(indexPath, 'utf8');
+
+// Replace the version placeholder with the generated version number
+indexHtml = indexHtml.replace(/<!-- VERSION_PLACEHOLDER -->/g, `Version: ${version}`);
+
+// Write the updated HTML back to the file
+fs.writeFileSync(indexPath, indexHtml);
+
+console.log(`Version number updated to: ${version}`);