I wanted to share with you a tool we've developed to assist with the automatic installation and update of Aggregate servers.
At this moment, it only supports Linux (Ubuntu 18.04) boxes running Apache Tomcat and PostgreSQL, but it should be easy to modify to support other stacks (contributions, as always, are very welcome).
You can check
aggregate-cli out at https://github.com/opendatakit/aggregate-cli
If you're interested in trying this out in your environment, please keep me posted