[ENH] - Build docker images for arm (aarch64)

[aktech]

Feature description

Build docker images for arm (aarch64) based machines.

Value and/or benefit

Currently conda-store is building docker images only for x86_64, which would not work for aarch64 machines. Implementing this issue will have the following benefits:

• Users will be able to chose arm based images in their cloud provider to run conda-store on.
• It will help developers run local deployment of Nebari (biggest consumer of conda-store) on Mac M1 (https://github.com/nebari-dev/nebari/issues/1405) or any arm based machines.

Anything else?

No response

[aktech]

Created a draft PR for reference: https://github.com/conda-incubator/conda-store/pull/822