update to gogs 0.9.13

Dockerfile

@@ -14,7 +14,7 @@ RUN passwd -d git
 RUN mkdir -p /home/git/gogs
 ## TODO: use redis as well
 RUN cd /home/git/gogs && \
-    curl -L https://github.com/gogits/gogs/releases/download/v0.9.0/linux_amd64.tar.gz | tar zxvf - --strip-components 1
+    curl -L https://github.com/gogits/gogs/releases/download/v0.9.13/linux_amd64.tar.gz | tar zxvf - --strip-components 1
 
 # setup config paths
 ADD app.ini.template /home/git/app.ini.template