Add Dockerfile-arm64 to allow docker builds on Apple M1/M2 architecture

[iandoe]

What does this PR do?

This PR adds a Dockerfile-arm64 that does build on M1 Macs (and potentially on M2 as well, not tested)

Fixes # (issue)

• Unable to locate package intel-oneapi-mkl-devel #46

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Who can review?

• @mneedham
• @OlivierDehaene

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag
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[OlivierDehaene]

While it does built, it's impossible to have Metal/accelerate. I don't really see why you would use such images. Do you have a use case in mind?

[iandoe]

Hey @OlivierDehaene,

Thanks for having a look, TEI is great.

I'm using a local docker instance in development, while it is indeed pretty slow, it saves me from using my HF Inference Endpoints in development and incurring $$ costs, and facilitates setup with other engineers with docker-compose.

Self compiling with rust as explained in the local install does indeed allow for Metal support and is much faster. Speed is not of the essence in my use case (more so ease-of-setup).

Hope that helps and if you'd prefer not to merge i'm happy to close and just answer in #46.

Regards.

[OlivierDehaene]

Ok that makes sense. If you can add a disclaimer in the README explaining the issue with Metal/accelerate in ARM builds that would be great!
We can even build the image in the CI I guess.

[OlivierDehaene]

Thanks