The goal is to write a script that we can run once and will run IBD on master every 24 hours or so. Breakdown of the script:
* Pull latest Bitcoin ABC master
* Build `bitcoind`
* Clear blockchain files (but not configs) in `~/.bitcoin/`
* Spin up `bitcoind` node
* Wait for IBD to complete
* After IBD has finished, wait for 24 hours or so.
* Restart the script from the beginning
Another way this script can be improved is to only run if the previous run has a different HEAD commit than latest master, though this feature isn't strictly necessary for MVP.