Use oci output

Author: Evans Aboge (from Dev Box)

.azure-pipelines/ci-build.yml

@@ -291,7 +291,7 @@ extends:
             # Build image with BuildX but don't push yet - save to local tar file
             docker buildx build \
               --platform linux/amd64,linux/arm64/v8 \
-              --output "type=docker,dest=$(Build.ArtifactStagingDirectory)/DockerImage/docker-image.tar" \
+              --output "type=oci,dest=$(Build.ArtifactStagingDirectory)/DockerImage/docker-image.tar" \
               $(IMAGE_TAGS) \
               $(Build.SourcesDirectory)
           displayName: 'Build Docker image and save to artifact'