Jeremy Davis's picture

The sandbox is only designed to be used as an "on the fly" early development mechanism for adding additional bits, without needing to rebuild from scratch again. I.e. it's only intended as a development aid to speed up initial development, not as a long term place to add overlay files. Note that anything that you add to the sandbox is deleted next time you run make clean!

The proper long term place to add overlay files is the overlay/ directory of your appliance build code. E.g. The Apache vhost config file for the Mibew appliance needs to go in /etc/apache2/sites-avaialble/mibew.conf in the built appliance, so we add it to overlay/etc/apache2/sites-available/mibew.conf.

I hope that makes sense.