Stage: /config/com.myproperties
Prod: /config/com.myproperties

in each com.myproperties contains the data necessary to connect to that enviornments database.

application.jdbc.username=foo
application.jdbc.password=bar
application.jdbc.url=anyurl

public DataSource dataSource() {
    DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create();
    dataSourceBuilder.url(${application.jdbc.url});
    dataSourceBuilder.username(${application.jdbc.username});
    dataSourceBuilder.password(${application.jdbc.password});
    return dataSourceBuilder.build();