using the latest context version luametatex on ubuntu 19.4

system          > ConTeXt  ver: 2019.08.24 22:50 MKIV beta  fmt:
2019.8.25  int: english/english
system          > 'cont-new.mkiv' loaded


with the dijkstra.ttf font apparently seen:

$ mtxrun --script fonts --list --all --name dijkstra
identifier        familyname   fontname   filename
                                                  subfont   instances

dijkstra          dijkstra     dijkstra   ~/.local/share/fonts/Unknown
Vendor/TrueType/Dijkstra/Dijkstra_Thin.ttf
dijkstranormal    dijkstra     dijkstra   ~/.local/share/fonts/Unknown
Vendor/TrueType/Dijkstra/Dijkstra_Thin.ttf
dijkstraregular   dijkstra     dijkstra   ~/.local/share/fonts/Unknown
Vendor/TrueType/Dijkstra/Dijkstra_Thin.ttf



context will complain that the font is unknown:

selectfont      > The requested font 'dijkstra' has no files for the
'tf' alternative, Latin Modern is used instead.


I assume i missed a critical step somewhere down the road.
any hints?

thanks
Floris