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- USER: The container user name
- GROUP: The container user group
- USER_ID: Id of local user executing docker instance
- GROUP_ID: Group id from local user executing docker instance
- ALMA_DIR: Path that has all the directories that will be mounted as /alma in the container, for instance in my examples is '/external/docker/'
- Inside this directory there's a set of directories for each OS, each will be mounted as /alma for the different images/containers. For instance '/external/docker/centos7' will be mounted as /alma in centos7 containers
- HOME_DIR: Path that will be mounted as the /home/$USER directory in the machine. The $HOME_DIR/$CONTAINER_OS will be mapped in the container to /home/almamgr with the default configuration
- REPO_DIR: Path to the Git Repository. In my case inside this path (/external/Repos) I have 'almasw' and 'worktrees', which allow to have several worktrees for building without affecting other parts of the system
- CONTAINER_OS: Here I define the default OS to be used. This can be overridden on command line if other OS is going to be used, but the default one should be defined here
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