Has anyone managed to activate enable container mode on CHR 7.15rc2 Arm64?
I tried on Hetzner CAX11, it didn’t work.
What does “not working” mean? Are there any errors?
There are no errors. Container mode just doesn’t turn on. Tried doing a cold boot.
You have installed container package, first?
Did this work in previous versions of RouterOS or did you not check it?
system/device-mode/print
Worked on CHR x86, but doesn’t work on ARM64
We have confirmed this issue, meanwhile you could simply run another virtual machine with your apps in that, without need for containers at all.
Is there any update for this?
I tried the same at Hetzner (as they are one of the few providers who offer ARM64 VPSes and I wanted to try the combo of Zerotier(+Controller) and Containers (eg. for Zerotier Pylon))
As I was not sure if the server really “resets” correctly at Hetzner I even tried to make a “backup” during this 5min-turn-off-period and restored it. 
Tried with 7.15.3 and 7.16rc2.
There is a workaround, mentioned in this post - http://forum.mikrotik.com/t/v7-16beta-testing-is-released/176494/1 just one more confirmation that it worked at that point.
And the post itself - http://forum.mikrotik.com/t/v7-15rc-testing-is-released/175351/1
Perfect. Thank you, that worked. (and now I found out that there is no zerotier/pylon for ARM64 
)