Support a new concept in containers.conf called "modules". A "module"
is a containers.conf file located at a specific directory. More than
one module can be loaded in the specified order, following existing
override semantics.
There are three directories to load modules from:
- $CONFIG_HOME/containers/containers.conf.modules
- /etc/containers/containers.conf.modules
- /usr/share/containers/containers.conf.modules
With CONFIG_HOME pointing to $HOME/.config or, if set, $XDG_CONFIG_HOME.
Absolute paths will be loaded as is, relative paths will be resolved
relative to the three directories above allowing for admin configs
(/etc/) to override system configs (/usr/share/) and user configs
($CONFIG_HOME) to override admin configs.
Pulls in containers/common/pull/1599.
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>
Valentin Rothberg