https://github.com/rancher/elemental-channels git .obs/dockerfile/Dockerfile.sl-micro-60-base channels/sl-micro-60-base.json .obs/dockerfile/Dockerfile.sl-micro-60-kvm channels/sl-micro-60-kvm.json .obs/dockerfile/Dockerfile.sl-micro-60-baremetal channels/sl-micro-60-baremetal.json .obs/dockerfile/Dockerfile.sl-micro-60-rt channels/sl-micro-60-rt.json .git main enable