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docker-ce now supports multiple architecture base images but looks for the tag arm64v8 instead of aarch64 (which is labelled as deprecated).

Unfortunately my new ubuntu 18.04 host os uname reports aarch64.
Linux nas 4.4.154-1122-rockchip-ayufan-g7859b9b904a9 #1 SMP Mon Oct 1 07:32:42 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux

So

  1. Can one manually add/change the architecture tag in a already operational host? or
  2. Will docker-ce pull the arm64v8 image even if the host os reports aarch64?
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I think, that's ok. I did not test with Ubuntu 18.04 but with latest Debian everything is working fine on my Pine64 :

root@pine64:~# uname -a
Linux pine64 3.10.107-pine64 #7 SMP PREEMPT Thu Jan 25 08:00:55 CET 2018 aarch64 GNU/Linux
root@pine64:~# docker info | grep arch
Architecture: aarch64

I have downloaded many arm64v8 images without any problem.

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