Troubleshooting Image Build =========================== Images fail to build -------------------- More space needed ^^^^^^^^^^^^^^^^^ Images are built in tmpfs by default, to speed up the builds. In case your machine doesn't have enough free RAM, the image building step can fail with a message like "At least 174MB more space needed on the / filesystem". If freeing up more RAM isn't a possibility, images can be built on disk by exporting an environment variable:: export DIB_NO_TMPFS=1