crane-push

Push local image to remote registry

$ crane push [path/to/tarball] [image_name]

$ crane push [path/to/tarball] [image_name] --image-refs [path/to/filename]

$ crane push [path/to/tarball] [image_name] --index

$ crane push [[-h|--help]]

crane push /[:tag]

    The fully qualified name of the local Docker image to push, including the tag (e.g., `my-app:latest`).

/[:tag]
    The target registry and image name where the image will be pushed. The tag is optional; if not provided, the same tag as the source image is used. (e.g., `docker.io/my-org/my-app:production`)

The `crane-push` command simplifies pushing Docker images to remote registries using Crane. It streamlines the process by handling authentication, image tagging, and layer uploading. Crane is designed as an alternative to the Docker CLI for manipulating container images, emphasizing speed and efficiency. `crane-push` reduces the complexity of manually crafting Docker commands and provides a cleaner interface for distributing container images. It's especially useful in automated CI/CD pipelines where seamless image deployment is critical. The command optimizes image pushing through parallel layer uploads and utilizes registry APIs directly to enhance performance. This can significantly decrease deployment times and improve overall workflow efficiency. Overall `crane-push` offers an efficient way to deploy container images to container registries with improved deployment performance compared to classic docker implementations.

Crane often relies on Docker's configuration for authentication. It typically uses the credentials stored in the `~/.docker/config.json` file.

Ensure you've logged into the target registry using `docker login` or equivalent methods to provide the necessary credentials.

It's crucial to use fully qualified image names, including the registry and tag. Omitting the registry assumes Docker Hub, which might not be the intended target. Be mindful of the tag, as omitting it uses the same tag from the source, and misconfiguration can overwrite an existing image.
For Example : `crane push my-app:latest my-registry.com/my-org/my-app:latest`

Pay attention to error messages from `crane-push`. Common errors include authentication failures, network connectivity issues, and invalid image names. Check registry permissions and verify the image exists locally.

Inspect the output for detailed information regarding layer upload failures or any registry specific errors.

crane(1), docker(1), skopeo(1)