ci: use ephemeral packages when building the build-base image

v2:
  - Update tag for the android_build image (Michel).

Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com> [v1]
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6388>
2 files changed