When performing network operations in build scripts or containers, prefer `curl` over `wget` for HTTP requests to standardize dependencies and improve portability. Use the specific flags `-fsSL` for silent operation with proper error handling, and explicitly specify output destinations. Additionally, ensure network services support both IPv4 and IPv6 addressing by using dual-stack binding configurations rather than binding only to 0.0.0.0 (IPv4). Example replacing wget with curl: ```bash # Instead of: wget -q -O- https://example.com/file.tar.gz | tar xz # Use: curl -fsSL https://example.com/file.tar.gz | tar xz ``` Example of dual-stack binding in gunicorn: ```bash # Instead of: gunicorn -w 3 --bind 0.0.0.0:5000 app:app # Use: gunicorn -w 3 --bind 0.0.0.0:5000 --bind [::]:5000 app:app ```