ci: Improve Docker build workflow and update dependencies

- Add release type detection to distinguish between version tags and edge builds
- Implement separate Docker build steps for release and edge builds with appropriate tags
- Add edge and SHA-based image tags for main branch builds
- Update nginx configuration to support Vietnamese (vi) language routing
- Simplify nginx location block to handle static files and fallback to index.html
- Remove javascript-obfuscator and ts-migrate from dependencies
- Update README with simplified self-hosting instructions using npx http-server
- Consolidate multiple server setup examples into single recommended approach
- Update build preview command to use npm run preview instead of npx serve
- Improve localization files for German, English, Vietnamese, and Chinese
- Update worker files and TypeScript logic files for improved functionality
- Enhance PDF tool pages with better structure and internationalization support

nginx.conf

@@ -23,10 +23,10 @@ http {
         root /usr/share/nginx/html;
         index index.html;
         
-        rewrite ^/(en|de|zh)/(.*)$ /$2 last;
+        rewrite ^/(en|de|zh|vi)/(.*)$ /$2 last;
 
         location / {
-            try_files $uri $uri/ /index.html;
+            try_files $uri $uri/ $uri.html /index.html;
         }
 
         location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {