PureOS provides convenient pre-built images for use on computer and in Virtual Machines, you can find those images here: https://downloads.puri.sm/
It is also possible to build a PureOS image. Purism does this when we want to test the reproducibility of a PureOS image. Here's how it's done;
1. **Prepare an appropriate environment. **
//If you're already running PureOS on your build machine, then you're all set. If you're running another GNU/Linux distribution it is likely best to set up a chroot or to use a tool like debspawn (discussed below.)//