diff --git a/files/Dockerfile b/files/Dockerfile
index 97e1354..2d9edea 100644
--- a/files/Dockerfile
+++ b/files/Dockerfile
@@ -6,6 +6,7 @@ RUN apt-get update \
  && apt-get install -y -q ssl-cert \
  && apt-get clean \
  && rm -rf /var/lib/apt/lists/* \
+ && mkdir -p /etc/nginx/ssl \
  && cp /etc/ssl/certs/ssl-cert-snakeoil.pem /etc/nginx/ssl/cert.pem \
  && cp /etc/ssl/private/ssl-cert-snakeoil.key /etc/nginx/ssl/cert.key