Would you mind just expanding on exactly what your ci pipeline/stack looks like which your company made its standard?
1. Git commit triggers CircleCI build and test phase
2. CircleCI deploy phase uploads the image to GKE
3. Google Container Engine stages the deployment for release
Jenkins and the Jenkins slaves also run on docker, and are managed by Kontena. In fact, the whole platform/pipeline runs completely on Docker. We use Ansible to install Kontena/docker on new servers.