By the time docker, virtualization, and programming environments are mostly sorted out, there will likely be a successor to the M1 on the market, so while I'm not GP, I do agree with the sentiment in this case. Especially with an ISA change.
Virtualization and Docker are both well on their way. You can download working VM systems both very simple to the complex with QEmu. A Docker engineer announced on Twitter that he had a early (pre-alpha) version of Docker working on the M1.
I wouldn't expect official stable support to be available very soon. Even then, even if most of the official Docker image library will have ARM support, a ton of community images will need to be ported – all of this will take quite some time.
