github.com/containers/podman/v5@v5.1.0-rc1/docs/source/markdown/options/squash-all.md (about)

     1  ####> This option file is used in:
     2  ####>   podman build, farm build
     3  ####> If file is edited, make sure the changes
     4  ####> are applicable to all of those.
     5  #### **--squash-all**
     6  
     7  Squash all of the new image's layers (including those inherited from a base image) into a single new layer.