diff --git a/build-containers.sh b/build-containers.sh
index 41dd140..6dfa05c 100755
--- a/build-containers.sh
+++ b/build-containers.sh
@@ -2,6 +2,9 @@
 
 BASEDIR=/etc/forgejo-actions
 
+echo "using key file: ${XDG_RUNTIME_DIR}/containers/auth.json"
+podman login --get-login git.ctbk.de
+
 # extra container tags and pushes for things that we don’t build, but need
 podman pull data.forgejo.org/oci/alpine:latest
 podman pull ghcr.io/catthehacker/ubuntu:act-24.04