Multiplatform docker

[hilli]

Description

I am doing development on an Apple Silicon Mac and doing deploys to other ARM based hosts. I have previously build the images myself, but figured that I can't be the only one who would like hanko on more than one architecture.

Implementation

• Added parameter in the Dockerfile's to enable building for multiple architectures
  • Fixing the builder to the BUILDPLATFORM
  • Utilizing GOs crossplatform builder to target TARGETARCH
  • Let buildx handle the matrix (1x2, but not the less :)) from there
• Bumped Docker's Github Actions versions to get rid of warnings, hopefully
• Bumped the go version to 1.19 in the Dockerfile

Tests

Try running the action related to the workflow on this branch. There should be bulds for both amd64 and arm64 on ghcr.io afterwards.

Todos

There are other architectures available (linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/mips64le, linux/mips64, linux/arm/v7, linux/arm/v6), which could be added to the matrix, but I would wait with that until there is a need for it.

[like-a-bause]

Hi hilli! Thanks for the contribution. Super cool.

[like-a-bause]

Awesome! Thanks a lot!