31 lines
1.2 KiB
Markdown
31 lines
1.2 KiB
Markdown
# Using multiple databases with official PostgreSQL Docker image
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The [official recommendation](https://hub.docker.com/_/postgres/) for creating
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multiple databases is as follows:
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*If you would like to do additional initialization in an image derived from
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this one, add one or more `*.sql`, `*.sql.gz`, or `*.sh` scripts under
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`/docker-entrypoint-initdb.d` (creating the directory if necessary). After the
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entrypoint calls `initdb` to create the default `postgres` user and database,
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it will run any `*.sql` files and source any `*.sh` scripts found in that
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directory to do further initialization before starting the service.*
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This directory contains a script to create multiple databases using that
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mechanism.
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## Usage
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Clone the repository, mount its directory as a volume into
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`/docker-entrypoint-initdb.d` and declare database names separated by commas in
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`POSTGRES_MULTIPLE_DATABASES` environment variable as follows
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(`docker-compose` syntax):
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myapp-postgresql:
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image: postgres:9.6.2
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volumes:
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- ../docker-posgresql-multiple-databases:/docker-entrypoint-initdb.d
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environment:
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- POSTGRES_MULTIPLE_DATABASES=db1,db2
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- POSTGRES_USER=myapp
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- POSTGRES_PASSWORD=
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