Working with continuous delivery in Rancher with the use of pipelines and Jenkins for building images was great for my use case because it build the image from source on the server. But considering the statement below from Rancher, I'm looking into fleet.
As of Rancher v2.5, Git-based deployment pipelines are now recommended to be handled with Rancher Continuous Delivery powered by Fleet, available in Cluster Explorer.
It is unclear to me if I can also build the images from source with fleet or how to set this up. Can someone point me in the right direction?
Yes, using Fleet you can build images from source to continue a GitOps-style CI/CD workflow. To connect a Git repo you use a manifest as described here. You should plan to migrate from the Rancher Pipelines workflow in Cluster Manager to the new Fleet workflow accessible from Cluster Explorer as suggested if you want to continue receiving enhancements to your CI/CD workflow.