Test fix for build action

Author: MasonM

.github/workflows/build-test.yml

@@ -77,8 +77,7 @@ jobs:
         with:
           push: false
           load: true
-          context: .
-          file: ./${{ steps.short-version.outputs.result }}/${{ matrix.variant }}/Dockerfile
+          context: ./${{ steps.short-version.outputs.result }}/${{ matrix.variant }}
           tags: ${{ env.IMAGE_TAG }}
 
       - name: Run tests with BATS