diff --git a/docker/idhub.Dockerfile b/docker/idhub.Dockerfile
index aa43271..b24b9f1 100644
--- a/docker/idhub.Dockerfile
+++ b/docker/idhub.Dockerfile
@@ -1,5 +1,6 @@
 FROM debian:bullseye-slim
 
+# last line is dependencies for weasyprint (for generating pdfs in lafede pilot) https://doc.courtbouillon.org/weasyprint/stable/first_steps.html#debian-11
 RUN apt update &&  apt-get install -y \
     python3-minimal \
     python3-pip \
@@ -7,7 +8,8 @@ RUN apt update &&  apt-get install -y \
     python-is-python3 \
     git \
     sqlite3 \
-    jq
+    jq \
+    python3-pip python3-cffi python3-brotli libpango-1.0-0 libpangoft2-1.0-0
 
 WORKDIR /opt/idhub
 
diff --git a/docker/idhub.entrypoint.sh b/docker/idhub.entrypoint.sh
index 63de887..3d26545 100755
--- a/docker/idhub.entrypoint.sh
+++ b/docker/idhub.entrypoint.sh
@@ -70,7 +70,7 @@ END
                         printf "This is DEVELOPMENT DEPLOYMENT: including demo hardcoded data\n  creating initial Datas\n" >&2
                         ./manage.py initial_datas
 
-                        if [ "${RESPONSE_URI}" ]; then
+                        if [ "${RESPONSE_URI:-}" ]; then
                                 config_oidc4vp
                         fi
                 else