[Request]: Buildkit should work without Rosetta 2

[fuantaji]

Feature or enhancement request details

Even building atop images that have arm64 platform version requires Rosetta 2 when it should not.

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[cloudnativeengineer]

same... found workaround:

% container system property ls |grep rosetta
rosetta = true

% container system stop

% cat ~/.config/container/config.toml
[build]
rosetta = false

% container system start

% container system property ls |grep rosetta
rosetta = false

[lohitkolluri]

Happened to look at this. The issue is that BuilderStart.swift passes rosetta = true to the builder VM right away, but if Rosetta 2 isn't installed, the VM creation just fails.

Fixed it by checking if the Rosetta runtime is actually installed before enabling it. If it's not there, --enable-qemu kicks in instead, which handles arm64 builds fine.

Put up a PR ( #1826 ) with the change. It's one line plus docs updates.

[lohitkolluri]

Hi @fuantaji @cloudnativeengineer! I put together a potential fix in PR #1826 for this issue. If you have a chance, I'd really appreciate it if you could take a look and let me know whether it addresses the problem you were seeing or if there's anything I may have missed.

Thank you!