Remove redundant -f Dockerfile

Author: tstellar

.github/workflows/build-ci-container.yml

@@ -41,7 +41,7 @@ jobs:
       - name: Build container
         working-directory: ./.github/workflows/containers/github-action-ci/
         run: |
-          podman build -t ${{ steps.vars.outputs.container-name-tag }} -f Dockerfile .
+          podman build -t ${{ steps.vars.outputs.container-name-tag }} .
 
       # Save the container so we have it in case the push fails.  This also
       # allows us to separate the push step into a different job so we can