问题
I have a project consisting of two main java apps that use eight postgres databases, so is there a way in docker-compose to build eight different databases so that each one has a different owner and password? Can I even do that in docker-compose?
example:
services:
postgresql:
build: db/.
ports:
- "5432:5432"
environment:
- POSTGRES_DB=database1
- POSTGRES_USER=database1
- POSTGRES_PASSWORD=database1
I know I can put all the .sql files in the docker-entrypoint-initdb.d and postgres will make them automatically, but how do I declare what .sql file goes in what database?
Tnx, Tom
回答1:
According to this Github issue might be possible to achieve multiple databases by using bash scripts which you will have to pass in your Dockerfile
EDIT:
To create multiple Databases you could use the following script:
https://github.com/mrts/docker-postgresql-multiple-databases
or
https://github.com/MartinKaburu/docker-postgresql-multiple-databases
Which suggest that you have to clone one of the above git repos and mount it as a volume to: /docker-entrypoint-initdb.d then you would be able to pass multiple database names by using: POSTGRES_MULTIPLE_DATABASES variable
回答2:
Well - take a look at this Github project: https://github.com/mrts/docker-postgresql-multiple-databases
According to official postgres docker image documentation:
If you would like to do additional initialization in an image derived from this one, add one or more *.sql, *.sql.gz, or *.sh scripts under /docker-entrypoint-initdb.d (creating the directory if necessary). After the entrypoint calls initdb to create the default postgres user and database, it will run any *.sql files and source any *.sh scripts found in that directory to do further initialization before starting the service.
You will find the prepared script on that repo which you could use.
来源：https://stackoverflow.com/questions/46668233/multiple-databases-in-docker-and-docker-compose