ko

ko is a simple, fast container image builder for Go applications. It's ideal for use cases where your image contains a single Go application without any/many dependencies on the OS base image (e.g., no cgo, no OS package dependencies). ko builds images by effectively executing go build on your local machine, and as such doesn't require docker to be installed. This can make it a good fit for lightweight CI/CD use cases. ko also includes support for simple YAML templating which makes it a powerful tool for Kubernetes applications. ko depends on the authentication configured in your Docker config. If you can push an image with docker push, you are already authenticated for ko. Since ko doesn't require docker, ko login also provides a surface for logging in to a container image registry with a username and password, similar to docker login. Additionally, if auth is not configured in the Docker config, ko includes built-in support for authenticating container registries.