provide common database(s) for process examples

[jangalinski]

So far, each process node (trivial/simple) launches an h2 in mem db. So when we start more nodes of an app, they will only know there own data (tasks), thus we cannot use loadbalancing.

We need a db config with camunda-schema (h2-server?, mysql-docker?) that can be shared among process apps.

Hint: see mysql node setup in https://github.com/holisticon/cughh-springboot-example/tree/master/database

[jangalinski]

I found a promising docker-compose/mysql approach that I am currently trying ...

[jangalinski]

docker-compose setup pushed