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Rootless Container Build on Kubernetes
Running CI tasks on your Kubernetes infrastructure is relatively easy nowadays. The integrations for Github Actions1 and Gitlab CI can be set up in mere minutes. And if that doesn’t suit your needs, there is always Jenkins, which even has a Kubernetes native Operator now! Many pipelines require building containers. In a lot of environments build jobs come with a docker installation. If your jobs are containerised you are probably using Docker in Docker....
NVIDIA's GPU Operator on Flatcar
Managing hardware-related aspects of Kubernetes clusters is hard. Accessing host hardware often requires additional kernel modules and deep integration or even modification of container runtimes. Meanwhile, nodes come and go and provisioning tools like coreos/ignition or canonical/cloud-init don’t cover the whole node lifecycle. It becomes even harder on specialised container operating systems like Fedora/RedHat CoreOS and Flatcar because of their largely immutable or ephemeral filesystems. Oftentimes using an additional IT automation stack like Ansible or Chef seems necessary....