Dockerfile config for arm64

[kvalev]

This allows using the same Dockerfile for both armhf and arm64.

@abraunegg I would like to also add automated builds, but couldnt find how its done for amd64. Can you point me in the right direction?

[abraunegg]

@kvalev

This allows using the same Dockerfile for both armhf and arm64.

Many thanks for the contribution.

Is there any way to auto detect ARCH to choose the right ARCH, so that the file does not need to be manually edited to build against the right architecture?

@abraunegg I would like to also add automated builds, but couldnt find how its done for amd64. Can you point me in the right direction?

Unfortunately the Docker build service only allows automated builds against X86 architectures. To build / publish ARM builds, would require a completely different CI/CD process, building on a different system, then pushing the image to Docker.

[kvalev]

Is there any way to auto detect ARCH to choose the right ARCH, so that the file does not need to be manually edited to build against the right architecture?

Docker provides few default arguments - TARGETPLATFORM, TARGETOS, TARGETARCH and TARGETVARIANT, but none of them match the architecture strings used by ldc.

Unfortunately the Docker build service only allows automated builds against X86 architectures. To build / publish ARM builds, would require a completely different CI/CD process, building on a different system, then pushing the image to Docker.

It seems there are 1 or 2 ways to install QEMU using docker hub hooks, but this would mean that the Dockerfiles have to be tweaked, which is not ideal. So the only realistic way is to do it using a different CI - I guess travis, given that it is already used it in the project. Using buildx it is fairly easy to build those arm Docker images on plain linux:

# armv7
docker buildx build --platform=linux/arm/v7 -t driveone/onedrive:${TAG}-armv7 -f contrib/docker/Dockerfile-rpi --build-arg ARCH=armhf --push .

# arm64
docker buildx build --platform=linux/arm64 -t driveone/onedrive:${TAG}-arm64 -f contrib/docker/Dockerfile-rpi --build-arg ARCH=aarch64 --push .

# create a manifest for all 3 architectures
docker buildx imagetools create --tag driveone/onedrive:${TAG} driveone/onedrive:${TAG}-amd64 driveone/onedrive:${TAG}-arm64 driveone/onedrive:${TAG}-armv7

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