It runs in a single job, where single job = single runner. To use two runners/jobs to build multiplatform, each will need to push an untagged image and the shas

It runs in a single job, where single job = single runner. To use two runners/jobs to build multiplatform, each will need to push an untagged image and the shas are aggregated into a manifest in a third job. Definitely doable and the recipes will come out. Personally prefer just using Go/ko whenever possible ;)