anchor.diff:  You can perform a postgres vacuum command by running the crunchy-vacuum
   container.  You specify a database to vacuum using environment variables.
   
  -An example is shown in the $CCPROOT/examples/docker/run-vacuum.sh script
  +An example is shown in the $CCPROOT/examples/docker/vacuum/run.sh script
   and can be run as follows:
   ....
  -cd $CCPROOT/examples/docker/master-replica
  +cd $CCPROOT/examples/docker/vacuum
   ./run.sh
   ....
   
  
positive.code: to pgbouncer will be able to connect to the master as before the failover.
  
  To just log into the database from the pgbouncer connection pool
  you would enter the following:
  ....
  psql -h localhost -p 12005 -U testuser master
  ....
  
negative.code: ./run.sh
  ....
  
  You can test the replication status on the master by using the following command
  and the password "password":
  ....
  psql -h 127.0.0.1 -p 12000 -U postgres postgres -c 'table pg_stat_replication'
  ....
  