Building for macOS (ARM) Fails; Suggest Utilizing GitHub Actions M1 Runners

[Alec-Bailey]

Description:

Building the Docker image for macOS on ARM architecture encounters failures. To address this amd64 specific packages should be replaced with their arm64 counterparts when arm64 is passed as a build arg. Additionally going forward GitHub Actions’ M1 macOS runner are now publicly available and can be leveraged. (GitHub Changelog)

Steps to Reproduce:

1.	Attempt to build the Docker image on a macOS ARM machine.
2.	Observe the build process failing.

Expected Behavior:

The Docker image should build successfully on macOS ARM architecture.

Actual Behavior:

The build process fails on macOS ARM architecture.

11.45 E: Package 'gcc-multilib' has no installation candidate
------

 1 warning found (use docker --debug to expand):
 - FromAsCasing: 'as' and 'FROM' keywords' casing do not match (line 1)
Dockerfile:16
--------------------
  15 |     # python 3.8 is installed by toolchain manager hence older version of libffi is required
  16 | >>> RUN <<EOT
  17 | >>>     apt-get -y update
  18 | >>>     apt-get -y upgrade
  19 | >>>     apt-get -y install wget unzip clang-format gcc-multilib make libffi7
  20 | >>>     apt-get -y clean
  21 | >>>     rm -rf /var/lib/apt/lists/*
  22 | >>> EOT
  23 |     
--------------------
ERROR: failed to solve: process "/bin/bash -euxo pipefail -c     apt-get -y update\n    apt-get -y upgrade\n    apt-get -y install wget unzip clang-format gcc-multilib make libffi7\n    apt-get -y clean\n    rm -rf /var/lib/apt/lists/*\n" did not complete successfully: exit code: 100

Same as in issue #107

Proposed Solution:

• Resolve amd64 package incompatibilities in Dockerfile.

• Update the GitHub Actions workflow to utilize M1 macOS runners

[coderbyheart]

I'm happy to review a PR that addresses this.