According to the guideline of theme deployment from Keycloak https://www.keycloak.org/docs/latest/server_development/#deploying-themes

Bellow is steps to create a jar file the theme folder and update to k8s deployment folder

• Go to yas folder

cd yas

• Run the jar command line to create a jar file

jar cvf yas.jar *

• Copy yas.jar file to k8s/deploy/keycloak/themes folder