Adding if statement to modified test yml

.github/workflows/modified-test.yml

@@ -13,7 +13,7 @@ jobs:
         uses: jitterbit/get-changed-files@v1
       - run: |
           for changed_file in ${{ steps.files.outputs.added_modified }}; do
-              if [[ $changed_file =~ *Dockerfile_* ]]; then
+              if [[ $changed_file == *"Dockerfile_"* ]]; then
                   echo "Do something with this ${changed_file}."
               fi
           done