Add the microshift with bootc course to the front page

Author: flozanorht

modules/ROOT/pages/index.adoc

@@ -8,10 +8,14 @@ This course teaches how to create *Red Hat Device Edge* images for edge devices
 * Using the Image Builder tool to create and deploy edge images based on the RPM-OSTree technology.
 * Performing OSTree repository management to deliver updates to edge devices.
 
-It is part of a Red Hat Device Learning path, which currently includes two courses:
+It is part of a Red Hat Device Learning path, which currently includes three courses in two different tracks:
 
-* *Building Red Hat Device Edge Images* (this course)
-* https://redhatquickcourses.github.io/rhde-microshift/[Deploying MicroShift on Red Hat Device] (follow-up course)
+* For customers using RHEL for Edge and RPM-OSTree based edge images:
+** *Building Red Hat Device Edge Images* (this course)
+** https://redhatquickcourses.github.io/rhde-microshift/[Deploying MicroShift on Red Hat Device] (follow-up course)
+
+* For customers using RHEL image mode:
+** https://redhatquickcourses.github.io/rhde-microshift-bootc/[Deploying MicroShift on RHEL Image Mode]
 
 IMPORTANT: Red Hat employees must enroll using its https://training-lms.redhat.com/sso/saml/auth/rhlpint?RelayState=deeplinkoffering%3D66848400[LMS entry] to get completion credits, and Red Hat Partners must enroll using its https://training-lms.redhat.com/sso/saml/auth/rhopen?RelayState=deeplinkoffering%3D66848513[Partner Portal entry].