server:
  image: rancher/k3s:v1.17.2-k3s1
  command: server --disable-agent --no-deploy traefik
  environment:
    - K3S_CLUSTER_SECRET=somethingtotallyrandom
    - K3S_KUBECONFIG_OUTPUT=/output/kubeconfig.yaml
    - K3S_KUBECONFIG_MODE=666
  volumes:
    # k3s will generate a kubeconfig.yaml in this directory. This volume is mounted
    # on your host, so you can then 'export KUBECONFIG=/somewhere/on/your/host/out/kubeconfig.yaml',
    # in order for your kubectl commands to work.
    - /somewhere/on/your/host/out:/output
    # This directory is where you put all the (yaml) configuration files of
    # the Kubernetes resources.
    - /somewhere/on/your/host/in:/var/lib/rancher/k3s/server/manifests
  ports:
    - 6443:6443

node:
  image: rancher/k3s:v1.17.2-k3s1
  privileged: true
  links:
    - server
  environment:
    - K3S_URL=https://server:6443
    - K3S_CLUSTER_SECRET=somethingtotallyrandom
  volumes:
    # this is where you would place a alternative traefik image (saved as a .tar file with
    # 'docker save'), if you want to use it, instead of the traefik:v2.8 image.
    - /somewhere/on/your/host/custom-image:/var/lib/rancher/k3s/agent/images
