diskimage-builder/elements/apt-sources/README.md

Override the default sources.list

For APT based systems, if your network connection is slow for the default sources.list in the upstream cloud image, you can define DIB_APT_SOURCES with your favorite sources.list to override it, before running devtest.sh.

The new sources.list will take effect at build time and run time.

If you want to use this element with tripleo-incubator scripts, set NODE_DIST / SEED_DIB_EXTRA_ARGS / UNDERCLOUD_DIB_EXTRA_ARGS / OVERCLOUD_CONTROL_DIB_EXTRA_ARGS / OVERCLOUD_COMPUTE_DIB_EXTRA_ARGS to make it take effect at the appropriate time.

For instance, before running devtest.sh: export DIB_APT_SOURCES=/etc/apt/sources.list export NODE_DIST="ubuntu apt-sources"