One syslog to rule them all

1. Build the syslog container:

   docker build -t syslog .

2. Run it:

   docker run --name syslog -d -v /tmp/syslogdev:/dev syslog

3. Tail them logs:

   docker run --volumes-from syslog ubuntu tail -f /var/log/syslog

4. Start another container to send logs:

   docker run -v /tmp/syslogdev/log:/dev/log ubuntu logger hello

5. See in the log message show up in the "tail" container.