Removed tini

Dockerfile

-FROM krallin/ubuntu-tini:16.04
+FROM ubuntu:16.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     python \
@@ -35,6 +35,4 @@ RUN ln -s /haiwen/seahub-data/avatars /haiwen/seafile-server-latest/seahub/media
 ADD setenv.sh /
 ADD docker-entrypoint.sh /
 
-ENTRYPOINT ["/usr/local/bin/tini", "--"]
-
-CMD ["/docker-entrypoint.sh"]
+ENTRYPOINT ["/docker-entrypoint.sh"]