diff --git a/.gitea/workflows/base-build.yml b/.gitea/workflows/base-build.yml
index 7fa8a53..b3a593b 100644
--- a/.gitea/workflows/base-build.yml
+++ b/.gitea/workflows/base-build.yml
@@ -190,6 +190,14 @@ jobs:
             echo "[INFO] Created $DOCKERFILE_PATH"
           done
 
+      - name: Copy rootfs tarballs into version dirs for Docker build context
+        run: |
+          for version in $VERSIONS; do
+            mkdir -p "$version"
+            cp "debian-base/$version/debian-$version.tar.bz2" "$version/"
+            ls -lh "$version/"
+          done
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3