ARM64 not compatible

[dusty-cjh]

Hey master, as you can see, there is no arm64 based docker image in your official repo.

I appreciate the Qiniu cost efficiency than Ali OSS, so we determine to switch to Qiniu OSS, but sadly there is no official arm64 image.

If yours can help add more arch support, we'll appreciate a lot.

[bachue]

Ok, we will do it later.

[Terencesun]

any update?