Docker image for ARM64 (aarch64 / Arm Ampere) architecture

[Dmitriusan]

Hi! First, thanks for such an incredible tool.

Would you please consider also publishing versions of Docker images for aarch64 architecture? A lot of cloud providers are already suggesting attractive options (like https://www.oracle.com/cloud/compute/arm/ ), so this architecture is becoming more common. Current images are built for arm64 architecture and can not be used

  Type     Reason     Age                From               Message
  ----     ------     ----               ----               -------
  Normal   Scheduled  84s                default-scheduler  Successfully assigned default/postgres-upgrade-job-p8b4x to omen
  Normal   Pulling    41s (x3 over 84s)  kubelet            Pulling image "tianon/postgres-upgrade:15-to-16"
  Warning  Failed     39s (x3 over 82s)  kubelet            Failed to pull image "tianon/postgres-upgrade:15-to-16": rpc error: code = NotFound desc = failed to pull and unpack image "docker.io/tianon/postgres-upgrade:15-to-16": no match for platform in manifest: not found
  Warning  Failed     39s (x3 over 82s)  kubelet            Error: ErrImagePull
  Normal   BackOff    2s (x5 over 81s)   kubelet            Back-off pulling image "tianon/postgres-upgrade:15-to-16"
  Warning  Failed     2s (x5 over 81s)   kubelet            Error: ImagePullBackOff

If I understand correctly, that is just a matter of adding an arm64 architecture tag to the script that renders the template and using Postgres containers/repos for this architecture

[tianon]

Duplicate of #43 👀