After navigating to the images dashbaord (by clicking on the Images tab in the main nav), click on the Add Image Source button to bring up the create form.
On the create form, simply fill in the Docker Registry details for registry url and image name/tag. If the repo requires auth to pull the image, select the use auth checkbox and enter your username along with a password.
If you've got questions about the platform or need some help getting started, our team is more than happy to assist. Whether you're new to containers or just new to Cycle, reach out to us via livechat by clicking the blue circle in the bottom right corner. Join our Slack channel, and get help from the dev team or other members of the community, and check out our Roadmap to see what's planned for the future!