Fix `dockerfilegraph` pre-commit hook (#17698)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>

.pre-commit-config.yaml

@@ -125,8 +125,6 @@ repos:
     name: Update Dockerfile dependency graph
     entry: tools/update-dockerfile-graph.sh
     language: script
-    files: ^docker/Dockerfile$
-    pass_filenames: false
   # Keep `suggestion` last
   - id: suggestion
     name: Suggestion

tools/update-dockerfile-graph.sh

@@ -4,8 +4,11 @@
 
 set -euo pipefail
 
-# Check if docker/Dockerfile is staged for commit
-if git diff --cached --name-only | grep -q "^docker/Dockerfile$"; then
+# Accept file paths as arguments
+FILES=("$@")
+
+# Check if docker/Dockerfile is among the provided files
+if printf '%s\n' "${FILES[@]}" | grep -q "^docker/Dockerfile$"; then
   echo "docker/Dockerfile has changed, attempting to update dependency graph..."
 
   # Check if Docker is installed and running