Docker image build

[gylfirst]

Docker image cant build currently:

• on i386 platform

Causes:

• Cargo is not installed

[gylfirst]

After #13 and #14, we add to the bug list:

• ppc64le
• armv6

Same cause

Cargo, the Rust package manager, is not installed or is not on PATH.
This package requires Rust and Cargo to compile extensions. Install it through
the system's package manager or via https://rustup.rs/
       
Checking for Rust toolchain....

We think that this is because we have no wheel for theses platforms for our dependances.

• discord.py[speed]

[Zalk0]

Currently we only build docker images for:

• amd64
• armv6
• armv7

Reason: Those are common platforms and wheels are available, so it's easy to build.
Relation: #16

We are planning to add more platforms in the future (see https://github.com/python-cffi/cffi which should have arm64 wheels for the next release).
Edit: cffi released a release candidate and plan to do a full release just after the first release candidate of Python 3.13 which is planned for July 30.

[Zalk0]

Now building images for arm64 🎉

[gylfirst]

Close the issue for now
Maybe we will add more in future