unable to replace docker by containerd

[obeyler]

Is your feature request related to a problem? Please describe.
I want to replace docker by containerd inside K8S
I can't do it because the monit of kubelet has a depend docker

kubo-release/jobs/kubelet/monit

Line 6 in a9c5063

depends on docker

Describe the solution you'd like
I want to have the choice of CRI

[obeyler]

the workaroud is to use this as bosh operator
the docker process is still present but not use anymore
Take the containerd release in our repo https://github.com/orange-cloudfoundry/containerd-boshrelease

- type: replace
  path: /instance_groups/name=worker/jobs/name=docker/properties
  value: {}

- type: replace
  path: /instance_groups/name=worker/jobs/name=kubelet/properties/k8s-args/container-runtime
  value: remote

- type: replace
  path: /instance_groups/name=worker/jobs/name=kubelet/properties/k8s-args/container-runtime-endpoint?
  value: unix:///var/vcap/sys/run/containerd/containerd.sock

- type: replace
  path: /instance_groups/name=worker/jobs/name=kubelet/properties/k8s-args/runtime-request-timeout?
  value: 15m

- type: replace
  path: /instance_groups/name=worker/jobs/-
  value:
    name: containerd
    release: containerd
    properties:
      proxy:
        https: ((https_proxy))
        http: ((http_proxy))
        noproxy: ((no_proxy))
      config_toml:
        custom: |
          [plugins]
            [plugins.cgroups]
              no_prometheus = false
            [plugins.cri]
              stream_server_address = "127.0.0.1"
              stream_server_port = "0"
              enable_selinux = false
              sandbox_image = "k8s.gcr.io/pause:3.1"
              stats_collect_period = 10
              systemd_cgroup = false
              enable_tls_streaming = false
              max_container_log_line_size = 16384
              disable_proc_mount = false
              [plugins.cri.containerd]
                snapshotter = "overlayfs"
                no_pivot = false
                [plugins.cri.containerd.default_runtime]
                  runtime_type = "io.containerd.runtime.v1.linux"
                  runtime_engine = ""
                  runtime_root = ""
                [plugins.cri.containerd.untrusted_workload_runtime]
                  runtime_type = ""
                  runtime_engine = ""
                  runtime_root = ""
              [plugins.cri.cni]
                bin_dir = "/var/vcap/packages/cni/bin"
                conf_dir = "/etc/cni/net.d"
                conf_template = ""
              [plugins.cri.registry]
                [plugins.cri.registry.mirrors]
                  [plugins.cri.registry.mirrors."docker.io"]
                    endpoint = ["https://registry-1.docker.io"]
              [plugins.cri.x509_key_pair_streaming]
                tls_cert_file = ""
                tls_key_file = ""
            [plugins.diff-service]
              default = ["walking"]
            [plugins.linux]
              shim = "containerd-shim"
              runtime = "runc"
              runtime_root = ""
              no_shim = false
              shim_debug = false
            [plugins.opt]
              path = "/opt/containerd"
            [plugins.restart]
              interval = "10s"
            [plugins.scheduler]
              pause_threshold = 0.02
              deletion_threshold = 0
              mutation_threshold = 100
              schedule_delay = "0s"
              startup_delay = "100ms"

- type: remove
  path: /instance_groups/name=worker/jobs/name=kubelet/properties/k8s-args/docker

- type: remove
  path: /instance_groups/name=worker/jobs/name=kubelet/properties/k8s-args/docker-endpoint

- type: replace
  path: /releases/-
  value:
    name: containerd
    version: latest