LXCFS is included in many Linux distributions. In most cases installing it is as simple as selecting it in your package manager.
Distributions also often provide backports of newer versions of LXCFS for their stable releases. You may want to look for that, especially if your distribution doesn't include LXCFS at all or not the new 4.0 branch.
Current development version¶
You can clone lxcfs directly with:
git clone git://github.com/lxc/lxcfs
Stable release tarballs are available for download below.