Correct syntax (unique keys)

Author: NattyNarwhal

.github/workflows/ci.yml

@@ -48,6 +48,7 @@ jobs:
         run: |
           docker pull ibmcom/db2
           docker save -o image-cache/db2.tar ibmcom/db2
+      - name: Restore container from cache
         if: steps.cache-docker.outputs.cache-hit == 'true'
         run: docker load -i image-cache/db2.tar
       - name: Set up Db2 LUW in Docker