Do not build a specific root FS for DomU. Instead, re-use the one that is built for Dom0. While this is certainly not a typical real-world configuration, it helps reduce both build time and disk space which is beneficial in many ways, especially for CI.
Do not build a specific root FS for DomU. Instead, re-use the one that is built for Dom0. While this is certainly not a typical real-world configuration, it helps reduce both build time and disk space which is beneficial in many ways, especially for CI.