To build a new set of images, update the `Makefile` with the new version number, and then `make all`. This will automatically update the header comments in the Dockerfiles and update any `FROM` statements to ensure that the image verions remain in lock-step with each other. (The downside is that if you only wanted to tweak a "leaf" image, you'll still be touching/updating _all_ of the images. But reasoning about the images is much easier if they all have the same version.)
To build a new set of images, update the `Makefile` with the new version number, and then `make all`. This will automatically update the header comments in the Dockerfiles and update any `FROM` statements to ensure that the image verions remain in lock-step with each other. (The downside is that if you only wanted to tweak a "leaf" image, you'll still be touching/updating _all_ of the images. But reasoning about the images is much easier if they all have the same version.)