Database migrations using Docker and Flyway

1. Spin-up database (you need Docker to do that): bash ./src/main/docker/postgresUp. It will start PostgreSQL 11 database on host, port: localhost:5432 with database: migration and user, password: min_privs;
2. Run migration: bash gradlew flywayMigrate -i;
3. After you can connect to database using: bash ./src/main/docker/postgresConnect.