Improve the steps to run it with Docker
Improve the steps to run it with Docker

- Fix docker command syntax
- Add a migrate step
- Link with a MySQL Docker container

MEDIGO/laika,MEDIGO/laika,alexyans/laika,alexyans/laika,dbrabera/laika,dbrabera/laika,MEDIGO/laika,dbrabera/laika,MEDIGO/laika,alexyans/laika,alexyans/laika,alexyans/laika,dbrabera/laika