ucm exits with "Killed" on startup on M1 host

[aryairani]

FROM mcr.microsoft.com/vscode/devcontainers/base:0-focal

MacBook Air (M1, 2020)
macOS 11.6 (20G165)
Visual Studio Code 1.61.0
Docker Desktop 4.1.0 (69386)

stack also exits with "Killed"

vscode ➜ /workspaces/vscode-devcontainer2/unison (trunk) $ uname -a
Linux 09b2799dfc99 5.10.47-linuxkit #1 SMP PREEMPT Sat Jul 3 21:50:16 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

[aryairani]

Using the arm image

FROM mcr.microsoft.com/vscode/devcontainers/base:dev-hirsute

I understandably end up with

qemu-x86_64: Could not open '/lib64/ld-linux-x86-64.so.2': No such file or directory

The version of haskell-stack in this distro is 2.3.3 (too low; the current intel version is 2.7.3), and stack won't bootstrap, giving

Unable to find installation URLs for OS key: linux-aarch64-tinfo6

on a stack setup or stack build.