Follow-up fix for D250 - actually use the new volume

Test Plan: Covered by CI

X-Origin-Diff: phab/D251
GitOrigin-RevId: 65c547de038a4dfd37c7c8394a8a0e79914333bb
diff --git a/scripts/run_ci.sh b/scripts/run_ci.sh
index c310c55..f9e0c12 100755
--- a/scripts/run_ci.sh
+++ b/scripts/run_ci.sh
@@ -46,7 +46,7 @@
 
 podman run \
     -v $(pwd):/work \
-    -v bazel-shared-cache:/user/.cache/bazel/_bazel_root \
+    -v ${CACHE_VOLUME}:/user/.cache/bazel/_bazel_root \
     --device /dev/kvm \
     --privileged \
     --pod ${POD} \