Using multiple databases with the official PostgreSQL Docker image (wiht multiple dump files)

This fork has added the functionality of adding and execution of dump files to each database.

The official recommendation 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

Note: do not place sql scripts in 'docker-entrypoint-initdb.d' directory. In this example they are placed in 'db-scripts' and referenced form *.sh file.

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
    environment:
		- POSTGRES_MULTIPLE_DATABASES=DB1,ownerOfDB1,db1Dump.sql-DB2,ownerOfDB2,db2Dump.sql-...DB(n),ownerOfDB(n),db(n)Dump.sql
        - POSTGRES_PASSWORD=

volumes:
  - ./create-multiple-postgresql-databases.sh:/docker-entrypoint-initdb.d/create-multiple-postgresql-databases.sh
  - ./db1Dump.sql:/db-scripts/db1Dump.sql
  - ./db2Dump.sql:/db-scripts/db2Dump.sql
  ...
  - ./db(n)Dump.sql:/db-scripts/db(n)Dump.sql