podman/docs/source/markdown/options/layers.md

####> This option file is used in: ####> podman build, farm build ####> If file is edited, make sure the changes ####> are applicable to all of those.

--layers

Cache intermediate images during the build process (Default is true).

Note: You can also override the default value of layers by setting the BUILDAH_LAYERS environment variable. export BUILDAH_LAYERS=true