To create a Docker container image we need a Dockerfile that describes the base image and packages to be installed on the image. A Dockerfile lets you define and then create an image that can then be used to create container instances. A Photon Dockerfile is located at following location:
$HOME/workspace/photon/support/dockerfiles/photon
To build new images you should have built all Photon RPMS using make all or make iso. Also, the docker service should be running in the background.
The ./make-docker-image.sh command takes the path of the local repo and the type of image (i.e. minimal, micro or full) you want to create.
cd $HOME/workspace/photon/support/dockerfiles/photon
./make-docker-image.sh $HOME/workspace minimal
docker run -it photon:minimal