Provide ARM based image on docker hub

[everflux]

It would be very convenient if you could provide a multi arch image on docker hub, so that ARM is supported as well.

[darklynx]

that make sense 👍
do you have any hints on how to achieve that or any article that descries how to do it right with docker hub?

[everflux]

You could look into how I did it with a DockerHub based build here: https://github.com/trion-development/docker-ng-cli A (german, but google translate should work) description is here: https://www.trion.de/news/2019/10/14/docker-multi-arch-dockerhub.html

[maaroen]

I'm also interested in this, is there any progress on it?

I could send you a sample command to build for arm64 if needed, I just have a startup issue with it

[maaroen]

This is how I made a working ARM64 image:

• I changed the GOARCH to arm64 in the multistage dockerfile
• I changed the images of golang and alpine to: arm64v8/golang and arm64v8/alpine (this shouldn't be needed, see next step)
• I ran the build using the following command: docker buildx build --tag registry.xxx.nl/request-baskets:latest --tag registry.xxx.nl/request-baskets:1.2.3 --platform linux/arm64 --file docker/multistage/Dockerfile --push . From the root directory of the repository. By specifying the --platform linux/arm64 flag, it should automatically choose the correct arm64 images when pulling the base images to build and publish with.

So basically the only change I would assume to be needed is the GOARCH value in the dockerfile. Is setting this value actually needed, or could this be retrieved from the operating system? If this is the case then you can easily make multiplatform builds using this command:

docker buildx build --tag registry.xxx.nl/request-baskets:latest --tag registry.xxx.nl/request-baskets:1.2.3 --platform linux/arm64 --platform linux/amd64 --progress=plain --file docker/multistage/Dockerfile --push .

[darklynx]

I wonder if all that can be automated via GitHub actions and results are hosted on GitHub container registry.

Unfortunately dont have time to look at it, but PR or a link to a simple example are highly appreciated :)