move it under the github.workspace prior???

- Error: buildx failed with: ERROR: failed to solve: failed to compute cache key: failed to calculate checksum of ref vgvvy0hbyxf4f68gvtmcwz7tr::r6ztuhyp7ruavx9j118gyrd00: "/home/runner/work/db2rest/db2rest/db2rest.jar": not found

.github/workflows/dockerhub-publish.yml

@@ -31,7 +31,7 @@ jobs:
           echo "CI--- Downloading DB2REST JAR from Maven Central"
           wget --progress=bar:force:noscroll https://search.maven.org/remotecontent?filepath=io/9tiger/db2rest/$DB2REST_VERSION/db2rest-$DB2REST_VERSION.jar
           echo "CI--- File downloaded successfully"
-          mv *.jar db2rest.jar
+          mv *.jar ${{ github.workspace }}/db2rest.jar
           ls -l
 
       - name: Set up Docker Buildx