Add support for seafile 6

[edouard-lopez]

Here is how we use you container, that could be automated.

Create a new container

On the host machine run:

docker run -t -i -v /opt/seafile/<CLIENT>:/opt/seafile  jenserat/seafile -- /bin/bash

Install seafile

Enter the container to install seafile

download-seafile
/opt/seafile/seafile-server-6.*/setup-seafile.sh

Answer the questions:

[server name]: <CLIENT>
[This server's ip or domain]: cloud.<CLIENT>.org
[default: /opt/seafile/seafile-data ] 
[default: 8082 ] 

Start the service

Start seafile et seahub

/opt/seafile/seafile-server-latest/seafile.sh start
/opt/seafile/seafile-server-latest/seahub.sh start

Finish

Exit and restart the container.