Agent { dockerfile true } cache and performance

[Joshuafr]

Hi all,
Are docker images cached after been built with agent { dockerfile true } or are they rebuilt for each job?

Thanks

[halkeye (Gavin Mogan)]

If it’s on the same agent it’ll probably be cached.at least that’s how docker build works

[poddingue (Bruno Verachten)]

Hello and welcome to this community @Joshuafr

The images and layers are cached thanks to the Docker cache.
As long as you don’t change the context (i.e. your Dockerfile) and that you don’t clean your Docker cache outside of Jenkins, your image should stay cached.