diff --git a/docker/scripts/0-create-cert.sh b/docker/scripts/0-create-cert.sh
index 6a5d8df..6572e4c 100644
--- a/docker/scripts/0-create-cert.sh
+++ b/docker/scripts/0-create-cert.sh
@@ -2,6 +2,12 @@
 
 set -e
 
+# Wait for haproxy container
+while ! nc -z haproxy 9999 2>/dev/null; do
+    echo "Waiting for haproxy:9999..."
+    sleep 7
+done
+
 if [ ! -f /etc/certificates/site.pem ]; then
   # Generate self-signed certificate
   openssl genrsa -out site.key 2048