Try to fix bad substitution error V2.2

Author: rbanka1

.github/workflows/nightly.yml

@@ -37,6 +37,7 @@ jobs:
             -v ${{github.workspace}}:/workspace \
             -w /workspace \
             --env BUILD_TYPE=${{matrix.build_type}} \
+            --user root \
             umf-ubuntu-20.04 \
             bash -c "
               apt-get update &&
@@ -76,6 +77,7 @@ jobs:
           -v ${{github.workspace}}:/workspace \
           -w /workspace \
           --env TOOL=${{ matrix.tool }} \
+          --user root \
           umf-ubuntu-20.04 \
           bash -c "\
             apt-get update &&