The description states: "Running Clang in a container has the advantage that it is light on resources and won’t mess with your underlying OS.". Containers aren't really light on resources if the host kernel is not Linux and not messing with OS is easily attainable by installing the binaries in a custom prefix directory (e.g. ~/bin). This is especially true for compilers which have minimal or zero dependencies.
The description states: "Running Clang in a container has the advantage that it is light on resources and won’t mess with your underlying OS.". Containers aren't really light on resources if the host kernel is not Linux and not messing with OS is easily attainable by installing the binaries in a custom prefix directory (e.g. ~/bin). This is especially true for compilers which have minimal or zero dependencies.