Clean up Dev hub's dashboard image and install mystmd,voila and voici packages#5851

Merged

balajialg merged 3 commits intoberkeley-dsep-infra:stagingfrom balajialg:voila

Jul 15, 2024

+7-43

Commits on Jul 10, 2024

Add voila and voici package in dashboard image
balajialg
committed
Install voici, mystmd and comment out unnecessary packages for dashboard image
balajialg
committed

Commits on Jul 11, 2024

Addressing review comments
balajialg
committed