Placing these directories at the root will make the git revision
detection consider the working directory to be dirty.

Instead of using the install baked in the image, let's clone vcpkg
and set up a separate binary cache that can survive being cleaned.
This allows us to reuse built artifacts from the vcpkg manifest
baseline very quickly.

Let's not rely on the CMakeLists.txt to automatically detect and
use ccache. It's better to just explicitly specify it.

Ring Racers' object file output is considerably larger than SRB2.
50M is insufficient to hold even a single build.

The singular .gitlab-ci.yml is pretty beefy. Splitting it into
smaller files by job and job template will make maintaining the
individual jobs easier.

Like with ccache, we want to make sure the git checkout is considered
clean during build.

Placing these directories at the root will make the git revision
detection consider the working directory to be dirty.

Instead of using the install baked in the image, let's clone vcpkg
and set up a separate binary cache that can survive being cleaned.
This allows us to reuse built artifacts from the vcpkg manifest
baseline very quickly.

Let's not rely on the CMakeLists.txt to automatically detect and
use ccache. It's better to just explicitly specify it.

Ring Racers' object file output is considerably larger than SRB2.
50M is insufficient to hold even a single build.

The singular .gitlab-ci.yml is pretty beefy. Splitting it into
smaller files by job and job template will make maintaining the
individual jobs easier.