Preserve existing charts

Author: rjeberhard

.github/workflows/publish-gh-pages.yml

@@ -48,6 +48,8 @@ jobs:
           export PATH="$PWD:$PATH"
           mkdir $GITHUB_WORKSPACE/WORK
           
+          cp -R $GITHUB_WORKSPACE/gh-pages/charts $GITHUB_WORKSPACE/WORK
+          
           cd $GITHUB_WORKSPACE/branch-4.0/documentation
           echo "Building documentation for latest minor version..."
           hugo -s site -d "$GITHUB_WORKSPACE/WORK" -b https://oracle.github.io/weblogic-kubernetes-operator