How to run docker inside chroot

Question

I have debian stretch installed in arm64 android phone in chrooted environment. I have installed docker-ce following these steps from here.

On starting docker :: systemctl start docker

returns this error :: Running in chroot, ignoring request.

Checking using service docker status shows [FAIL] Docker is not running ... failed!

If I run using dockerd, it shows this error ::

INFO[2018-02-05T22:15:35.631735524+05:30] libcontainerd: started new docker-containerd process  pid=23047
INFO[0000] starting containerd                           module=containerd revision=89623f28b87a6004d4b785663257362d1658a729 version=v1.0.0
INFO[0000] setting subreaper...                          module=containerd
INFO[0000] changing OOM score to -500                    module=containerd
INFO[0000] loading plugin "io.containerd.content.v1.content"...  module=containerd type=io.containerd.content.v1
INFO[0000] loading plugin "io.containerd.snapshotter.v1.btrfs"...  module=containerd type=io.containerd.snapshotter.v1
WARN[0000] failed to load plugin io.containerd.snapshotter.v1.btrfs  error="path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.btrfs must be a btrfs filesystem to be used with the btrfs snapshotter" module=containerd
INFO[0000] loading plugin "io.containerd.snapshotter.v1.overlayfs"...  module=containerd type=io.containerd.snapshotter.v1
INFO[0000] loading plugin "io.containerd.metadata.v1.bolt"...  module=containerd type=io.containerd.metadata.v1
WARN[0000] could not use snapshotter btrfs in metadata plugin  error="path /var/lib/docker/containerd/daemon/io.containerd.snapshotter.v1.btrfs must be a btrfs filesystem to be used with the btrfs snapshotter" module="containerd/io.containerd.metadata.v1.bolt"
INFO[0000] loading plugin "io.containerd.differ.v1.walking"...  module=containerd type=io.containerd.differ.v1
INFO[0000] loading plugin "io.containerd.gc.v1.scheduler"...  module=containerd type=io.containerd.gc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.containers"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.content"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.diff"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.events"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.healthcheck"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.images"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.leases"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.namespaces"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.snapshots"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.monitor.v1.cgroups"...  module=containerd type=io.containerd.monitor.v1
INFO[0000] loading plugin "io.containerd.runtime.v1.linux"...  module=containerd type=io.containerd.runtime.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.tasks"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.version"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] loading plugin "io.containerd.grpc.v1.introspection"...  module=containerd type=io.containerd.grpc.v1
INFO[0000] serving...                                    address="/var/run/docker/containerd/docker-containerd-debug.sock" module="containerd/debug"
INFO[0000] serving...                                    address="/var/run/docker/containerd/docker-containerd.sock" module="containerd/grpc"
INFO[0000] containerd successfully booted in 0.032191s   module=containerd
ERRO[2018-02-05T22:15:35.833079554+05:30] 'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded.
ERRO[2018-02-05T22:15:35.846402107+05:30] 'overlay' not found as a supported filesystem on this host. Please ensure kernel is new enough and has overlay support loaded.
ERRO[2018-02-05T22:15:35.850080389+05:30] devmapper: Udev sync is not supported. This will lead to data loss and unexpected behavior. Install a more recent version of libdevmapper or select a different storage driver. For more information, see https://docs.docker.com/engine/reference/commandline/dockerd/#storage-driver-options
INFO[2018-02-05T22:15:35.887075601+05:30] Graph migration to content-addressability took 0.00 seconds
WARN[2018-02-05T22:15:35.889037268+05:30] Your kernel does not support cgroup memory limit
WARN[2018-02-05T22:15:35.889872633+05:30] Your kernel does not support cgroup cfs period
WARN[2018-02-05T22:15:35.890405497+05:30] Your kernel does not support cgroup cfs quotas
WARN[2018-02-05T22:15:35.891107633+05:30] Unable to find blkio cgroup in mounts
WARN[2018-02-05T22:15:35.891733726+05:30] mountpoint for pids not found
Error starting daemon: Devices cgroup isn't mounted

How can I run it inside chroot on my android phone ?

Solution

You failed to start docker because of that, when running in chroot, the system isn't fully booted. The process that manages services isn't running, so systemctl command ignores your start requests.

I would recommend that you start docker daemon directly: dockerd [arguments]. You can also use a process manager like supervisord.

Comments

[Biswapriyo]

Did you install Debian noroot app from Play Store?

[jonny789]

No, I am not using any app. I have rooted phone. I am running debian using a script ( which uses chroot ) that I run on android terminal app as root.