Update Dockerfile

Dockerfile

@@ -1,7 +1,7 @@
 FROM b3log/siyuan
 USER root
 RUN apk update && apk upgrade && apk add git wget nodejs npm
-RUN mkdir -p /home/siyuan/SiYuan && chmod -R u+rwx,g+rwx,o+rwx /home/siyuan/SiYuan
+RUN mkdir -p /home/siyuan && chmod -R u+rwx,g+rwx,o+rwx /home/siyuan
 RUN chmod -R u+rwx,g+rwx,o+rwx /tmp
 ENV localrepoPath /home/siyuan/SiYuan