Custom XBlocks deleting from devstack when devstack reboots

Whenever I do a make down in my OpenEdx devstack installation the custom XBlocks get deleted from the CMS and LMS python environment and I have to manually install them again.

How can this be prevented? Also this problem seems to be intermittent, as I did notice a few times this did not happen.

Thanks

Hey,
You’d like to have a look at this: