Docker image builder fix, attempt 1

Author: wsobel

.github/workflows/build-docker-image.yml

@@ -33,7 +33,7 @@ jobs:
   # this workflow contains a single job called "build"
   build:
     # Do not build if it is an RC build
-    if: ${{ ! contains(github.ref_name, "RC") }}
+    if: ${{ ! contains(github.ref_name, 'RC') }}
 
     # the type of runner that the job will run on
     runs-on: ubuntu-latest