https://github.com/mrts/docker-postgresql-multiple-databases

Using multiple databases with the official PostgreSQL Docker image
https://github.com/mrts/docker-postgresql-multiple-databases

docker postgresql

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Using multiple databases with the official PostgreSQL Docker image

• Host: GitHub
• URL: https://github.com/mrts/docker-postgresql-multiple-databases
• Owner: mrts
• License: mit
• Created: 2017-07-30T17:14:14.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2023-12-02T06:49:32.000Z (about 1 year ago)
• Last Synced: 2025-01-15T09:53:07.241Z (11 days ago)
• Topics: docker, postgresql
• Language: Shell
• Homepage:
• Size: 8.79 KB
• Stars: 712
• Watchers: 11
• Forks: 265
• Open Issues: 11
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Using multiple databases with the official PostgreSQL Docker image

The [official recommendation](https://hub.docker.com/_/postgres/) for creating

multiple databases is as follows:

*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.*

This directory contains a script to create multiple databases using that

mechanism.

## Usage

### By mounting a volume

Clone the repository, mount its directory as a volume into

`/docker-entrypoint-initdb.d` and declare database names separated by commas in

`POSTGRES_MULTIPLE_DATABASES` environment variable as follows

(`docker-compose` syntax):

    myapp-postgresql:

        image: postgres:9.6.2

        volumes:

            - ../docker-postgresql-multiple-databases:/docker-entrypoint-initdb.d

        environment:

            - POSTGRES_MULTIPLE_DATABASES: db1,db2

            - POSTGRES_USER: myapp

            - POSTGRES_PASSWORD:

### By building a custom image

Clone the repository, build and push the image to your Docker repository,

for example for Google Private Repository do the following:

    docker build --tag=eu.gcr.io/your-project/postgres-multi-db .

    gcloud docker -- push eu.gcr.io/your-project/postgres-multi-db

You still need to pass the `POSTGRES_MULTIPLE_DATABASES` environment variable

to the container:

    myapp-postgresql:

        image: eu.gcr.io/your-project/postgres-multi-db

        environment:

            - POSTGRES_MULTIPLE_DATABASES: db1,db2

            - POSTGRES_USER: myapp

            - POSTGRES_PASSWORD:

### Non-standard database names

If you need to use non-standard database names (hyphens, uppercase letters etc), quote them in `POSTGRES_MULTIPLE_DATABASES`:

        environment:

            - POSTGRES_MULTIPLE_DATABASES: "test-db-1","test-db-2"