Cannot start psm_db1 docker container

[oleksiy]

To replicate:

1. cd into docker directory
2. run docker-compose -p psm up -d --build
3. run docker ps -a to see the ID of postgres:alpine container
4. run docker start -ai 3f9c34176b00
   Error output:

➜  docker git:(master) docker start -ai 3f9c34176b00
2019-01-05 16:17:16.512 UTC [1] FATAL:  database files are incompatible with server
2019-01-05 16:17:16.512 UTC [1] DETAIL:  The data directory was initialized by PostgreSQL version 10, which is not compatible with this version 11.1.