diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index f3e37efc..bd9c2980 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -75,6 +75,7 @@ jobs:
           echo "LABEL=${label_extension}" >> $GITHUB_ENV
           echo "DOCKER_DEVICES=${docker_devices}" >> $GITHUB_ENV
           echo "RUNS_ON=${runs_on}" >> $GITHUB_ENV
+          echo REGISTRY_MIRROR=$REGISTRY_MIRROR >> $GITHUB_ENV
       - name: Initialize Docker Buildx
         uses: docker/setup-buildx-action@v3
         with: