It would nice if CircleCi could cache the docker images and save a lot of time spend in docker builds. Like Codeship does.
I have an image that is taking some minutes to build and my CircleCi builds are taking more than 10minutos to finish, which is awful.
The only way I found to actually cache the docker images with circleci is do what is explained in this CircleCi doc and this blog post. But this is a lot of work, scripts to build and maintain, specially if you have multiple images and multiple projects.