# This is an example for building the open source components of Docker for Mac
kernel:
  image: linuxkit/kernel:6.6.13
  cmdline: "console=ttyS0 page_poison=1"
init:
  - linuxkit/vpnkit-expose-port:b7d75bf04d53024e6245ff6631744b66560a135a # install vpnkit-expose-port and vpnkit-iptables-wrapper on host
  - linuxkit/init:7135424f6836ee166d1199e88cfb95ee88efaf91
  - linuxkit/runc:efcece75889aec4e2de0d95ba27ccc46438522b3
  - linuxkit/containerd:ce79d5d4ab9c46f4763735c6e4ab5c51c3feb5d8
  - linuxkit/ca-certificates:d4cc1b82c73d272e94d0e71ea375fe56b0c0626a
onboot:
  # support metadata for optional config in /run/config
  - name: metadata
    image: linuxkit/metadata:f35b5aafc7d19bb6a44a900840727902dad78e44
  - name: sysctl
    image: linuxkit/sysctl:c5f4b4895844b993dce4e8b35fd8263a6b557807
  - name: sysfs
    image: linuxkit/sysfs:010d0865b5786128962d2980efa8d4c6e4e8b8d6
  - name: binfmt
    image: linuxkit/binfmt:7dbce407e0b6814622bceae127421c5529fc7a3a
  # Format and mount the disk image in /var/lib/docker
  - name: format
    image: linuxkit/format:3c858f0cf42a2b14441bfb5c266b78f14d2b75a4
  - name: mount
    image: linuxkit/mount:4413ebd50bfbe026058e4a60463259cece2b8bb5
    command: ["/usr/bin/mountie", "/var/lib"]
  # make a swap file on the mounted disk
  - name: swap
    image: linuxkit/swap:8a1fd15d56b6ddf67d6d8ce25361178e1f36128b
    command: ["/swap.sh", "--path", "/var/lib/swap", "--size", "1024M"]
  # mount-vpnkit mounts the 9p share used by vpnkit to coordinate port forwarding
  - name: mount-vpnkit
    image: alpine:3.13
    binds:
        - /var/:/host_var:rbind,rshared
    capabilities:
        - CAP_SYS_ADMIN
    rootfsPropagation: shared
    command: ["sh", "-c", "mkdir -p /host_var/vpnkit/port && mount -v -t 9p -o trans=virtio,dfltuid=1001,dfltgid=50,version=9p2000 port /host_var/vpnkit"]
  # move logs to the mounted disk (this is a temporary fix until we can limit the log sizes)
  - name: move-logs
    image: alpine:3.13
    binds:
        - /var:/host_var
    command: ["sh", "-c", "mv -v /host_var/log /host_var/lib && ln -vs /var/lib/log /host_var/log"]
  - name: dhcpcd
    image: linuxkit/dhcpcd:330839488cd122db3c44738e265c035c9729a963
    command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
services:
  # Enable acpi to shutdown on power events
  - name: acpid
    image: linuxkit/acpid:6379700e2f3341250432e37a4cac36e35c7caac8
  # Enable getty for easier debugging
  - name: getty
    image: linuxkit/getty:bae9e3d4861173bacf78f14a4fe44997a430d13b
    env:
        - INSECURE=true
  # Run ntpd to keep time synchronised in the VM
  - name: ntpd
    image: linuxkit/openntpd:da26954c2f98a274091e5ed0bbdd2079a77a47c1
  # VSOCK to unix domain socket forwarding. Forwards guest /var/run/docker.sock
  # to a socket on the host.
  - name: vsudd
    image: linuxkit/vsudd:4d3c64766a5db737b952e83a8acf72ff0004333e
    binds:
        - /var/run:/var/run
    command: ["/vsudd", "-inport", "2376:unix:/var/run/docker.sock"]
  # vpnkit-forwarder forwards network traffic to/from the host via VSOCK port 62373. 
  # It needs access to the vpnkit 9P coordination share 
  - name: vpnkit-forwarder
    image: linuxkit/vpnkit-forwarder:930e9d3756e4b701595bf72c80e56d70abff70a1
    binds:
        - /var/vpnkit:/port
    net: host
    command: ["/vpnkit-forwarder", "-vsockPort", "62373"]
  # Monitor for image deletes and invoke a TRIM on the container filesystem
  - name: trim-after-delete
    image: linuxkit/trim-after-delete:14fbf307d2e6b287411987fcddde578b14e92b81
  # When the host resumes from sleep, force a clock resync
  - name: host-timesync-daemon
    image: linuxkit/host-timesync-daemon:f7047f8aa7c1d733d9b9acf0e5ad5bea66f3d005
  # Run dockerd with the vpnkit userland proxy from the vpnkit-forwarder container.
  # Bind mounts /var/run to allow vsudd to connect to docker.sock, /var/vpnkit
  # for vpnkit coordination and /run/config/docker for the configuration file.
  - name: docker-dfm
    image: docker:20.10.6-dind
    capabilities:
     - all
    net: host
    mounts:
     - type: cgroup
       options: ["rw","nosuid","noexec","nodev","relatime"]
    binds:
     - /etc/resolv.conf:/etc/resolv.conf
     - /var/lib/docker:/var/lib/docker
     - /lib/modules:/lib/modules
     - /var/vpnkit:/port # vpnkit control 9p mount
     - /var/run:/var/run
     - /run/config/docker:/var/config/docker
     - /usr/bin/vpnkit-expose-port:/usr/bin/vpnkit-expose-port # userland proxy
     - /usr/bin/vpnkit-iptables-wrapper:/usr/bin/iptables # iptables wrapper
    command: [ "/usr/local/bin/docker-init", "/usr/local/bin/dockerd", "--",
            "--config-file", "/var/config/docker/daemon.json",
            "--swarm-default-advertise-addr=eth0",
            "--userland-proxy-path", "/usr/bin/vpnkit-expose-port",
            "--storage-driver", "overlay2" ]
    runtime:
      mkdir: ["/var/lib/docker"]