I have followed the instructions for native Linux.
Current DEY-5.0 (scarthgap branch) in use, no changes.
Build (all image types) fails on “No IMAGE_CMD defined for IMAGE_FSTYPES entry ‘stsplitpartitions’ “
ERROR: /usr/local/dey-5.0/sources/meta-openembedded/meta-multimedia/recipes-multimedia/images/meta-multimedia-image-all.bb: No IMAGE_CMD defined for IMAGE_FSTYPES entry ‘stsplitpartitions’ - possibly invalid type name or missing support class
Docker container build works just fine.