Use the correct Dockerfile in L0 test builds (#532)

Author: alexbaden

.github/workflows/test-l0-docker.yml

@@ -40,7 +40,7 @@ jobs:
 
       - name: Build docker image
         run: |
-          cat omniscidb/docker/dev/Dockerfile omniscidb/docker/dev/Dockerfile.${{ inputs.name }} >Dockerfile
+          cat docker/Dockerfile docker/Dockerfile.${{ inputs.name }} >Dockerfile
           getent group render | awk -F : '{ print "RUN groupadd -g "$3" render && usermod -a -G render ghrunner" }' >>Dockerfile
           docker build . ${{ inputs.reset-cache && '--no-cache' || '' }} --tag hdk-build.${{ inputs.name }}