lxc-debian -p /var/lib/lxc/jenkins01
lxc-post-config jenkins01 192.168.0.30
Now the container starts when the host starts up, sets the network settings to a static IP and shuts down nicely (init 0) when it receives a signal from the host. You need to configure your host to send a PWR signal to each container from your /etc/init.d/lxc and wait for it to shutdown. Just insert the following into the stop sections:
for i in `pidof lxc-start`; do kill -PWR $i; done; sleep 30
At the moment the script assumes that you sit on a 192.168.0.0/8 network but I'll get round to changing that. I'm also assuming that you're using some kind of distribution based on Debian Squeeze.
You can grab the script from https://github.com/shin-nien/lxc-tools/raw/master/lxc-post-config