When applying cobranding to a containerized Spotfire environment, certain changes, like the landing page visibility, may not be apparent through the typical deployment of the cobranding package on the server. Instead, clients may need to install it, which should be integrated as part of the container in the case of containerization.

Sample landing page visibility which works with normal deployment (on-prem Linux):

For certain cobranding elements, it is enough to deploy the cobranding package to the default Spotfire server deployment area.
However, for more intricate alterations such as replacing landing pages, the Spotfire client needs to be part of the container  (either during the build process or by mounting custom modules).
Refer to the below documentation to build the Custom Module:
https://github.com/spotfiresoftware/spotfire-cloud-deployment-kit/blob/main/helm/examples/webplayer-custom-modules/README.md 

• https://docs.tibco.com/pub/sfire-analyst/latest/doc/html/en-US/TIB_sfire_cobranding_help/cobranding/topics/creating_and_deploying_a_cobranding_package.html