Add SSH keys setup guide and update configurations for secure key management

docker-compose.dev.yml

@@ -31,6 +31,7 @@ services:
     volumes:
       - ./storage:/var/www/html/storage
       - ./public/uploads:/var/www/html/public/uploads
+      - /var/crew-keys:/var/keys:ro
     labels:
       - "traefik.enable=true"
       # Development environment (dev.crewsportswear.app)