Creation multiple users and databases

[xtimon]

Execute for test:
docker run --name some-postgres -p 5432:5432 -e POSTGRES_USERS="user1:user1pass|user2:user2pass|user3:user3password" -e POSTGRES_DATABASES="database1:user1|database2:user2|database3:user3" -e POSTGRES_CONFIGS="work_mem:15MB|fsync:off|full_page_writes:off" -d xtimon/postgres

[gmile]

Is there anything to be done before this is merged? In case there's a reason this is not going to be merged – what is the official / proper way for adding new users / databases?

[yosifkit]

Related issues: docker-library/mysql#213, docker-library/mysql#86, docker-library/mysql#18, MariaDB/mariadb-docker#63, MariaDB/mariadb-docker#15.

So, the answer is to just put scripts in /docker-entrypoint-initdb.d/:

• Allow creation of multiple databases mysql#86 (comment)
• Allow creating multiple databases on startup. mysql#18 (comment)

[xtimon]

The official way for adding new users / databases is the same. I didn't broke it. All the environments POSTGRES_PASSWORD, POSTGRES_USER, POSTGRES_DB work as expected.

[Miesvanderlippe]

@yosifkit
The init script doesn't really solve my issue. Databases and usernames can be static but I'd much rather have random passwords which I can pass to my other containers.

Now I get I'd be able to generate a script before calling docker compose, but having it be more integrated would be nicer. I want to pass some Docker-compose variables to the DB which this PR would enable.

I also get you're annoyed having to answer similar questions all the time, but this PR is very much different from anything you're linking and solves a different problem. I hope you can look at it from my perspective and re-evaluate the value of this PR.

[tianon]

The point @yosifkit is making is that this PR can be implemented entirely as a drop-in script in /docker-entrypoint-initdb.d, and as such we'd rather not add additional behavior to an already overly complex initialization script we maintain as a delta over what upstream provides.