# 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:77e45e4681c78d59f1d8a48818260948d55f9d05 # install vpnkit-expose-port and vpnkit-iptables-wrapper on host
  - linuxkit/init:e120ea2a30d906bd1ee1874973d6e4b1403b5ca3
  - linuxkit/runc:6062483d748609d505f2bcde4e52ee64a3329f5f
  - linuxkit/containerd:39301e7312f13eedf19bd5d5551af7b37001d435
  - linuxkit/ca-certificates:5aaa343474e5ac3ac01f8b917e82efb1063d80ff
onboot:
  # support metadata for optional config in /run/config
  - name: metadata
    image: linuxkit/metadata:b082f1bf97a9034d1e4c0e36a5d2923f4e58f540
  - name: sysctl
    image: linuxkit/sysctl:5a374e4bf3e5a7deeacff6571d0f30f7ea8f56db
  - name: sysfs
    image: linuxkit/sysfs:ec174e06ca756f492e7a3fd6200d5c1672b97511
  - name: binfmt
    image: linuxkit/binfmt:68604c81876812ca1c9e2d9f098c28f463713e61
  # Format and mount the disk image in /var/lib/docker
  - name: format
    image: linuxkit/format:e040f4f045f03138a1ee8a22bb6feae7fd5596a6
  - name: mount
    image: linuxkit/mount:19ff89c251a4156bda8ed11c95faad2f40eb770e
    command: ["/usr/bin/mountie", "/var/lib"]
  # make a swap file on the mounted disk
  - name: swap
    image: linuxkit/swap:c57f3319ce770515357f0058035e40519c22b752
    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:e9e3580f2de00e73e7b316a007186d22fea056ee
    command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
services:
  # Enable acpi to shutdown on power events
  - name: acpid
    image: linuxkit/acpid:3b1560c81d3884e049ebbd9d9bf94ccb394e6cd3
  # Enable getty for easier debugging
  - name: getty
    image: linuxkit/getty:5d86a2ce2d890c14ab66b13638dcadf74f29218b
    env:
        - INSECURE=true
  # Run ntpd to keep time synchronised in the VM
  - name: ntpd
    image: linuxkit/openntpd:c90c6dd90f5dfb0ca71a73aac2dad69c8d956af3
  # VSOCK to unix domain socket forwarding. Forwards guest /var/run/docker.sock
  # to a socket on the host.
  - name: vsudd
    image: linuxkit/vsudd:b4d80d243733f80906cdbcf77f367a7b5744dc09
    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:a89ec807d7d675dccd53773c07382bc707db3396
    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:6ba98bfb111a808b7a1ca890aca9fc2b3709fca2
  # When the host resumes from sleep, force a clock resync
  - name: host-timesync-daemon
    image: linuxkit/host-timesync-daemon:0d351aee24b5cf853927647e4f5e6998014959db
  # 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"]