To launch a desktop application from the host,

    $ function lxc-launch() {
    >   sudo lxc-attach --clear-env -n $CONTAINER -- sudo -u ubuntu -i env DISPLAY=$DISPLAY $@
    > }

    $ CONTAINER=ubuntu-dev lxc-launch firefox

To launch an application from inside an lxc terminal session.

``` $ lxc-console -n $CONTAINER # login to your user account $ export DISPLAY=:0 # or whatever host $DISPLAY variable is set to. $ inkscape ````

References: