Specify version of Toolbox.

Also, shallow clone for speed and disk size.

.gitlab-ci.yml

@@ -7,6 +7,9 @@ stages:
   - test
   - build
 
+variables:
+  VERSION: 0.0.99
+
 build:
   stage: build
   image: buildpack-deps:bullseye
@@ -22,7 +25,11 @@ build:
       podman
       shellcheck
       systemd
-    - git clone https://github.com/containers/toolbox.git
+    - >-
+      git clone
+      --depth=1
+      "--branch=$VERSION"
+      https://github.com/containers/toolbox.git
     - cd toolbox
   script:
     - meson -Dprofile_dir=/etc/profile.d builddir