Installing-Clear-Containers-on-ClearLinux.md

Install the Clear Containers runtime on Clear Linux

Introduction

Clear Containers 2.1 is available in Clear Linux since version 13310. Run swupd command to ensure the host is using the latest Clear Linux Version.

$ sudo swupd update

Install the Clear Containers bundle

$ sudo swupd bundle-add containers-virt

Restart the docker systemd service

Docker on Clear Linux provides a docker.service service file to start the docker daemon. The daemon will use runc or cc-oci-runtime depending on the environment:

If you are running Clear Linux on baremetal or on a VM with Nested Virtualization activated, docker will use cc-oci-runtime as the default runtime. If you are running Clear Linux on a VM without Nested Virtualization, docker will use runc as the default runtime. It is not necessary to configure Docker to use cc-oci-runtime manually since docker itself will automatically use this runtime on systems that support it.

Note: to check which runtime your system is using, run:

sudo docker info | grep Runtime

Restart docker service:

$ sudo systemctl restart docker

Run a Clear Container

You are now ready to run Clear Containers. For example:

$ sudo docker run -ti fedora bash