Multi-architecture image build using buildx on GitHub Actions

[rnorth]

Multi-architecture image build using buildx on GitHub Actions.

Publishing an image for:

• AMD64 (to match status quo)
• ARM64 (for modern ARM servers/Apple M1)
• S390X (for IBM Z Series)
• PPC64LE (for IBM P Series)
• ARMv7 (for Raspberry Pi)

Because the current GitHub-Docker Hub integration does not support multi-arch builds, it is necessary to use GitHub Actions to build the images with Docker buildx (leveraging QEMU emulation).

[rnorth]

I've set up a new account on Docker Hub dedicated to builds, testcontainersbuild.

Using a private repo on Hub, testcontainersbuild/temp-test, I've done a trial run publication in this job which results in the following test image being published:

Next steps:

• reconfigure the workflow to push to testcontainers/ryuk, on release events only
• disable the current GitHub-Docker integration
• review, merge, and do a final test by cutting a new release

[bsideup]

💯

[codefromthecrypt]

Thanks so much!