ctr

List all containers

$ ctr containers list

$ ctr images list

$ ctr images pull [image]

$ ctr images tag [source_image]:[source_tag] [target_image]:[target_tag]

ctr [global options] command [arguments]

ctr is the command-line client for containerd, the industry-standard container runtime. It provides low-level container and image management capabilities.
Unlike Docker CLI, ctr is designed for debugging and direct containerd interaction rather than general use. Kubernetes typically uses containerd through crictl instead.

containers list

List all containers

Remove a container

List all images

Pull an image

Push an image

Tag an image

Run a container

Low-level tool primarily for debugging. For Kubernetes environments, use crictl. For general Docker-like experience, use nerdctl. Requires root or containerd socket access.

ctr is part of containerd, which was originally developed by Docker Inc. and donated to the Cloud Native Computing Foundation (CNCF) in 2017. containerd became a graduated CNCF project and is now the standard container runtime for Kubernetes and many other platforms.

containerd(8), crictl(1), nerdctl(1)