feat: Remove Caddy and Docker configuration; add Express server with health checker endpoint

docker-compose.yml

@@ -1,33 +0,0 @@
-version: '3.8'
-
-services:
-  caddy:
-    image: caddy:2-alpine
-    container_name: caddy_solu23
-    restart: unless-stopped
-    ports:
-      - "80:80"
-      - "443:443"
-      - "443:443/udp" # HTTP/3
-    volumes:
-      # Monta el Caddyfile
-      - ./Caddyfile:/etc/caddy/Caddyfile
-      # Monta los archivos del sitio
-      - ./:/var/www/sol23_placeholder
-      # Datos persistentes de Caddy (certificados SSL)
-      - caddy_data:/data
-      - caddy_config:/config
-      # Logs
-      - ./logs:/var/log/caddy
-    networks:
-      - caddy_network
-
-volumes:
-  caddy_data:
-    driver: local
-  caddy_config:
-    driver: local
-
-networks:
-  caddy_network:
-    driver: bridge