Considering adding support for multi-arch builds (or render dockerfile)

[clarkezone]

it’s pretty trivial to generate multi-arch images with manifest using docker/podman. I don’t believe this is possible via dotnet publish currently not is there any way to get the created dockerfile out in order to run a multi-arch build against. that This means you currently fall off a cliff if you want the more advanced scenario and have to rebuild a dockerfile from scratch. Please consider supporting multiple —arch flags and doing the small extra work under the covers to generate multi arch and a manifest. Or, a flag to write out the dockerfile that is created under the coveres.:

podman build --arch=amd64 --build-arg BUILD_HEADTAG="${HEAD_TAG}" --build-arg BUILD_HASH="${VERSION_HASH}" --build-arg BUILD_BRANCH="${HEAD_BRANCH}" -t ${IMG}:${VERSION}.amd64 -f Dockerfile
	podman build --arch=arm64 --build-arg BUILD_VERSION="${HEAD_TAG}" --build-arg BUILD_HASH="${VERSION_HASH}" --build-arg BUILD_BRANCH="${HEAD_BRANCH}" -t ${IMG}:${VERSION}.arm64 -f Dockerfile

podman manifest create ${IMG}:${VERSION}
podman manifest add ${IMG}:${VERSION} containers-storage:localhost/${IMG}:${VERSION}.amd64
podman manifest add ${IMG}:${VERSION} containers-storage:localhost/${IMG}:${VERSION}.arm64

[baronfel]

Hey @clarkezone do the discussions in #87 and #146 align with what you'd expect out of these use cases? Multi-manifest publishing is definitely the next 'Big Rock' feature for this tech - there are some hurdles in .NET all-up that we have to look at (we don't support multitargeted publish at all, which this really mirrors IMO) but it is something we should do.

With a multi-manifest container, would you expect the different architectures to be even have different tagging schemes that contain the os/arch. I'm thinking of the MS-built packages here:

Note here that the 7.0-jammy tag is a manifest list, and there are three architecture-specific images that have different tags.

[clarkezone]

@baronfel yes those both capture it pretty much exactly. #146 looks like it would unblock me in the short term, i'll give that a try. Subscribed to both of this, will close this one.