diff --git a/ci_container/Dockerfile.jammy b/ci_container/Dockerfile.jammy
index 36aba09..9ef3d92 100644
--- a/ci_container/Dockerfile.jammy
+++ b/ci_container/Dockerfile.jammy
@@ -7,6 +7,7 @@ LABEL org.opencontainers.image.created=${BUILDTIMESTAMP} \
       org.opencontainers.image.source="https://git.scc.kit.edu/mail/exim-encrypt-dlfunc/" \
       org.opencontainers.image.licenses="Apache-2.0"
 
+
 RUN apt-get update; \
     DEBIAN_FRONTEND=noninteractive DEBIAN_PRIORITY=critical apt-get install --no-install-recommends -y \
         build-essential \