docs: Mention mkosi -t none in rpm doc

diff --git a/docs/building-rpms-from-source.md b/docs/building-rpms-from-source.md
index 9455e27d749a85b9946dc48145de094d72490c1b..ecd5257de6aa8463a28e2e47d15e56a150c111b0 100644 (file)
--- a/docs/building-rpms-from-source.md
+++ b/docs/building-rpms-from-source.md
@@ -200,3 +200,6 @@ mkosi-install mkosi
 
 cp "$PACKAGEDIR"/*mkosi*.rpm "$OUTPUTDIR"
 ```
+
+To run just the build script to build the rpms without actually building
+an image, you can use the `none` output format (`mkosi -t none`).