Other than the fact that the container doesn't have cargo it works

Alright, let's try and I'll revert if it doesn't run correctly

@ntindle here is the full problem:
Neither Cargo nor rustc can be found, leading to the build failure (see build 347 374 I think).

The probable cause is as follows:

1. When the Rust installer runs, it writes the path manipulation inside $HOME/.bashrc
2. The GH actions run through sh, which doesn't run the ~/.bashrc file.
3. Pulling the container, we use bash as a shell.

As such, the solution is to do the path manipulation ourselves in the Dockerfile to ensure consistent paths, even with sh

Okay if whoever merges this doesn't squash and merge, I will cry. THank you for coming to my ted talk

To test, read the details of an action and see if scons passes