Sorry about the double-posting of this same topic (had an issue with my connection or browser and thought it wasnt posted yet).
I could manually install dockerman latest ipk, it showed more menus (like image, container management, etc.), but couldnt launch the container of an image I downloaded. Then after a reboot (to see if something didnt load correctly) the menu again only shows overview. This may be related to an error on the dockerd which is failing to launch with below errors related to cgroups:
INFO[2021-06-15T11:52:47.675609670Z] loading plugin "io.containerd.grpc.v1.version"... type=io.containerd.grpc.v1
INFO[2021-06-15T11:52:47.675649393Z] loading plugin "io.containerd.grpc.v1.introspection"... type=io.containerd.grpc.v1
INFO[2021-06-15T11:52:47.676526670Z] serving... address=/var/run/docker/containerd/containerd-debug.sock
INFO[2021-06-15T11:52:47.676715967Z] serving... address=/var/run/docker/containerd/containerd.sock.ttrpc
INFO[2021-06-15T11:52:47.676855985Z] serving... address=/var/run/docker/containerd/containerd.sock
INFO[2021-06-15T11:52:47.676918059Z] containerd successfully booted in 0.102068s
INFO[2021-06-15T11:52:47.695683096Z] parsed scheme: "unix" module=grpc
INFO[2021-06-15T11:52:47.695980300Z] scheme "unix" not registered, fallback to default scheme module=grpc
INFO[2021-06-15T11:52:47.696159115Z] ccResolverWrapper: sending update to cc: {[{unix:///var/run/docker/containerd/containerd.sock <nil> 0 <nil>}] <nil> <nil>} module=grpc
INFO[2021-06-15T11:52:47.696295744Z] ClientConn switching balancer to "pick_first" module=grpc
INFO[2021-06-15T11:52:47.698424726Z] parsed scheme: "unix" module=grpc
INFO[2021-06-15T11:52:47.698492152Z] scheme "unix" not registered, fallback to default scheme module=grpc
INFO[2021-06-15T11:52:47.698547022Z] ccResolverWrapper: sending update to cc: {[{unix:///var/run/docker/containerd/containerd.sock <nil> 0 <nil>}] <nil> <nil>} module=grpc
INFO[2021-06-15T11:52:47.698607559Z] ClientConn switching balancer to "pick_first" module=grpc
WARN[2021-06-15T11:52:47.705354393Z] Your kernel does not support cgroup memory limit
WARN[2021-06-15T11:52:47.705571059Z] Your kernel does not support cgroup blkio weight
WARN[2021-06-15T11:52:47.705654633Z] Your kernel does not support cgroup blkio weight_device
INFO[2021-06-15T11:52:47.706430059Z] stopping event stream following graceful shutdown error="context canceled" module=libcontainerd namespace=plugins.moby
INFO[2021-06-15T11:52:47.706666504Z] stopping healthcheck following graceful shutdown module=libcontainerd
failed to start daemon: Devices cgroup isn't mounted
root@rpi4:~#
I checked and some cgroups are mounted:
root@rpi4:~# mount
/dev/mmcblk0p2 on / type ext4 (rw,noatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,noatime)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
/dev/mmcblk0p1 on /boot type vfat (rw,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
tmpfs on /dev type tmpfs (rw,nosuid,relatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,mode=600,ptmxmode=000)
cgroup on /sys/fs/cgroup type tmpfs (rw,relatime,mode=755)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,relatime,cpuset)
cgroup on /sys/fs/cgroup/cpu type cgroup (rw,relatime,cpu)
cgroup on /sys/fs/cgroup/cpuacct type cgroup (rw,relatime,cpuacct)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,relatime,blkio)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,relatime,net_cls)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,relatime,pids)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,relatime,rdma)
debugfs on /sys/kernel/debug type debugfs (rw,noatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,noatime,mode=700)
/dev/mmcblk0p2 on /opt/docker type ext4 (rw,noatime)
tmpfs on /tmp/lib/docker type tmpfs (rw,nosuid,nodev,noatime)
root@rpi4:~#
is there something obvious I am missing for dockerd to run ?