feat: Add Dockerfile, Nginx configuration, and GitHub Actions workflow for continuous deployment.

nginx.conf

@@ -0,0 +1,14 @@
+server {
+    listen 80;
+    
+    location / {
+        root /usr/share/nginx/html;
+        index index.html index.htm;
+        try_files $uri $uri/ /index.html;
+    }
+
+    error_page 500 502 503 504 /50x.html;
+    location = /50x.html {
+        root /usr/share/nginx/html;
+    }
+}