Create log directory

Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get update && \
 ADD supervisor/ /etc/supervisor/conf.d/
 
 ENV GOPATH /home/cloudron
-RUN mkdir -p /home/cloudron/gogs
+RUN mkdir -p /home/cloudron/gogs/log
 
 ## TODO: use redis as well
 RUN mkdir -p ${GOPATH}/src/github.com/gogits && \