If you deploy services as Docker containers then keeping the base image up to date is your first line of defence against security threats.
Get alerts when upstream Docker images are updated so that you can update, integration test and deploy your containers quickly. Take advantage of the security work that upstream maintainers are doing.
Why not just use :latest? Because you want to ensure that your build is consistent and that you're testing the same image in all of your environments.
Wait, is this free? The hosting costs for this are minimal and I need this service for both my work and personal projects.
Login to the dashboard to set up your watched images now.