Feature request: Add Docker builds for arm/v7

[nickshanks347]

As the title says, it would be great if you could compile Docker builds for armv7.

[ismail]

Also for aarch64 please :-)

[a3957273]

We initially avoided this due to the overhead of building using QEMU. A 3 minute build was taking 30 minutes. Is there a better way to build for other arches?

[ismail]

Unfortunately, for Linux that still seems to be the case, but does 30 minutes really matter if this is done only for release builds?

[a3957273]

I'd be willing to merge in ARM builds if it was only done when a new tag was created. For anyone looking to take this on, there's an example of QEMU + multi-arch building on the original Docker pull request. Link: https://github.com/gchq/CyberChef/pull/1699/commits/0da30813da9903ba40e03842fe8d2eb613e95f22#diff-a62ff2d992534310d441210a2a8b31711c7e515c326a770d8b31f54a642d3f46

[ismail]

It's now possible to use ARM64 for GitHub actions, see https://github.blog/2024-06-03-arm64-on-github-actions-powering-faster-more-efficient-build-systems/

[furyhawk]

My pi is ready.

[ismail]

@furyhawk This is native, so it shouldn't need QEMU setup.

[a3957273]

Very exciting! Would happily accept a PR that adds builds for arm/v7 :)

EDIT: But would look for it to use a native ARM runner, previously we found that a QEMU build took way too longer, like 30+ minutes!