Working with the Container registry
You can store and manage Docker and OCI images in the Container registry, which uses the package namespace https://ghcr.io.
Working with the npm registry
You can configure npm to publish packages to GitHub Packages and to use packages stored on GitHub Packages as dependencies in an npm project.
Working with the RubyGems registry
You can configure RubyGems to publish a package to GitHub Packages and to use packages stored on GitHub Packages as dependencies in a Ruby project with Bundler.