docker-kubelet/docker-compose.yml

version: '2.2'

services:
  kubelet:
    build: .
    image: fphammerle/kubelet
    command: kubelet
    volumes:
    - '/var/run/docker.sock:/var/run/docker.sock'
    userns_mode: host
    #cap_add:
    #- SYS_PTRACE

# > mount("/var/lib/kubelet", "/var/lib/kubelet", 0xc00097656c, MS_BIND, NULL) = -1 EPERM (Operation not permitted)
# > F0401 15:36:24.291067       8 kubelet.go:1413] error configuring root directory: failed to bind-mount /var/lib/kubelet: operation not permitted

# https://docs.docker.com/compose/compose-file/compose-file-v2/