Add nginx-dav-ext-module

Dockerfile

@@ -1,4 +1,8 @@
 FROM nginx
+
+ADD nginx-dav-ext-module /
+RUN cd nginx-dav-ext-module && ls
+
 ENV VOUCH_INTERNAL=vouch:9090
 ADD nginx.conf.template /
 ADD docker-entrypoint.d /docker-entrypoint.d