Add Docker setup for Alma-vid React app

Introduces Dockerfile, docker-compose.yml, .dockerignore, nginx.conf, and a Docker-specific README to enable containerized builds and deployment for the React application using Node.js and nginx. Includes optimized nginx configuration for static assets, security headers, gzip compression, and React Router support.

docker-compose.yml

@@ -0,0 +1,19 @@
+version: "3.8"
+
+services:
+  alma-vid:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        BUILD_CONFIGURATION: production
+    ports:
+      - "80:80"
+    container_name: alma-vid-app
+    restart: unless-stopped
+    environment:
+      - NODE_ENV=production
+    volumes:
+      # Optional: mount custom nginx config
+      # - ./nginx.conf:/etc/nginx/nginx.conf:ro
+      - ./logs:/var/log/nginx