Multi-Arch Releases

[Xeratec]

This PR adds support for building multi-arch releases. See https://github.com/Xeratec/bender/releases/tag/v0.28.3-rc1 for an example.

Added

• New release_arm64 build stage

Changes

• Renamed release stage to release_amd64

Fixed

• Fixed ENV warning in Dockerfile

Note

• During the build, the release files are placed in target/<architecture>/<platform> (e.g. target/arm64/ubuntu22.04)
• To keep the release names compatible with earlier releases, amd64 is replaced with x86_64

[micprog]

Thanks for this extension! I have a few comments in the review. Also, please check if the names chosen work with the download script here:

curl --proto '=https' --tlsv1.2 https://pulp-platform.github.io/bender/init -sSf | sh

source: https://github.com/pulp-platform/bender/blob/website/init
If the script doesn't support arm64/aarch64 yet, extending it would be great!

[micprog]

LGTM, thanks! 👍