[NERVenv] - Support arm64 --> arm32 cross compilation.

[jr1221]

Description

Cross compiling is x86_64 to ARM32 via the dockerfile configuration. Create an architecture specific build (how?) such that the cross compilation toolchain could also be arm64 --> arm32.

Acceptance Criteria

It works on a M series mac.

Proposed Solution

Change the toolkit URL in the dockerfile based on architecture (somehow?). Or do it at runtime at the expense of space. See Argos repository for changing the CI to build on both platforms. Changing CI is required.