add dockerfile for Ascend NPU

[MengqingCao]

What does this PR do?

Add dockerfile for Ascend NPU, based on PyTorch.

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cc @sayakpaul @yiyixuxu @DN6

[sayakpaul]

I am not opposed to having this Dockerfile but I don't think we have test cases in the library yet that would benefit from the corresponding Docker image. We only have limited support for NPUs which was introduced in #7916.

So, I am going to defer to @yiyixuxu to make a call here.

[MengqingCao]

I am not opposed to having this Dockerfile but I don't think we have test cases in the library yet that would benefit from the corresponding Docker image. We only have limited support for NPUs which was introduced in #7916.

I got what you mean. A small question, are all the Dockerfiles in this repo work for UT test or CI? I thought this was for users to quickly set up their own development environment.

[sayakpaul]

A small question, are all the Dockerfiles in this repo work for UT test or CI? I thought this was for users to quickly set up their own development environment.

Both.

[yiyixuxu]

I think we don't need this just yet? cc @DN6

[DN6]

We don't have access to NPUs in our CI, so I don't think we can add it here.

[MengqingCao]

@sayakpaul @yiyixuxu @DN6 thanks for your suggestion! I think it's better to reopen this pr after the access to NPU and related UTs are ready.