Update Dockerfile

Author: Antonio Cheong

Dockerfile

@@ -1,6 +1,6 @@
 FROM nginx:latest
 
-COPY rootfs/ /
+COPY ./rootfs/ /
 
 RUN mkdir -p /tmp/nginx/body /var/lib/nginx/cache /data/logs \
  && mkdir -p /etc/letsencrypt/live/placeholder /data/nginx/placeholder /data/custom_ssl/placeholder \