Update Dockerfile-arm64

[glenn-jocher]

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to Docker workflow and ARM64 support for YOLOv5.

📊 Key Changes

• Uncommenting lines in the Docker GitHub Action workflow to enable building and pushing of ARM64 Docker images.
• Modification of the ARM64 Dockerfile to include the installation of the gcc package.

🎯 Purpose & Impact

• Purpose:
  • To automate the building and deployment of YOLOv5 Docker images for ARM64 architectures.
  • To ensure all necessary dependencies are included in the ARM64 Docker images.
• Impact:
  • 🚀 Enables users with ARM64 devices to easily pull and run YOLOv5 Docker images.
  • 🔧 Ensures a smoother experience and compatibility for ARM64 users by including gcc in the Docker image, which may be a dependency for building or running certain Python packages.