docker-compose with k3s server and agent

docker-compose.yml

version: '3'
services:
  k3s-server:
    image: rancher/k3s
    command: server --disable-agent
    environment:
      K3S_KUBECONFIG_OUTPUT: /output/kubeconfig.yaml
    volumes:
      - ./k3s-server:/var/lib/rancher/k3s
      - ./kubeconfig.yaml:/output/kubeconfig.yaml
  k3s-agent:
    image: rancher/k3s
    command: agent
    environment:
      K3S_URL: http://k3s-server:6443
      K3S_TOKEN: mysecrettoken
    volumes:
      - ./k3s-agent:/var/lib/rancher/k3s
    depends_on:
      - k3s-server
volumes:
  k3s-server:
  k3s-agent: