ci/fluster: Use structured tagging for Fluster

Structured tagging captures a checksum of the component we think we're
building, and verifies this through the chain.

Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34787>

.gitlab-ci/container/build-fluster.sh

@@ -10,6 +10,10 @@
 
 # Install fluster in /fluster.
 
+# Do a very early check to make sure the tag is correct without the need of
+# setting up the environment variables locally
+ci_tag_build_time_check "FLUSTER_TAG"
+
 set -uex
 
 section_start fluster "Installing fluster"

.gitlab-ci/container/gitlab-ci.yml

@@ -78,10 +78,20 @@
     # should make CI_BUILD_COMPONENTS="angle piglit"
     CI_BUILD_COMPONENTS: "angle"
 
+.container-builds-fluster:
+  variables:
+    FLUSTER_TAG: "${CONDITIONAL_BUILD_FLUSTER_TAG}"
+
 .container-builds-piglit:
   variables:
     PIGLIT_TAG: "${CONDITIONAL_BUILD_PIGLIT_TAG}"
 
+.container-builds-video:
+  extends:
+    - .container-builds-fluster
+  variables:
+    CI_BUILD_COMPONENTS: "fluster"
+
 .container-builds-x86_64:
   extends:
     - .container-builds-angle
@@ -492,6 +502,7 @@ debian/x86_64_test-android:
 debian/x86_64_test-video:
   extends:
     - .use-debian/x86_64_test-base
+    - .container-builds-video
     - .export-container
   variables:
     MESA_IMAGE_TAG: &debian-x86_64_test-video ${DEBIAN_TEST_VIDEO_TAG}