Please add support for /docker-entrypoint-initdb.d to the server image

[altvod]

Please add the ability to run initialization scripts in the server's docker image. It is a quite common feature for database server images to have a /docker-entrypoint-initdb.d directory where .sql or .sh initialization scripts can be put to be run on startup.
Examples:

• MySQL: https://hub.docker.com/_/mysql/
• Postgres: https://hub.docker.com/_/postgres/

They both have it.

It will make using ClickHouse in docker much easier

[abraithwaite]

This issue should be closed.