Dockerfile

@@ -1,2 +1,2 @@
-FROM postgres:14.4
+FROM postgres:9.6
 COPY create-multiple-postgresql-databases.sh /docker-entrypoint-initdb.d/

README.md

@@ -1,16 +1,14 @@
 # Using multiple databases with the official PostgreSQL Docker image
 
-This fork merges [heliocastro:user_pass_improvements](https://github.com/heliocastro/docker-postgresql-multiple-databases/tree/user_pass_improvement) with some slight tweaks to keep the user name the same as the database name.
-
 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
+*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
+this one, add one or more `*.sql`, `*.sql.gz`, or `*.sh` scripts under
-> `/docker-entrypoint-initdb.d` (creating the directory if necessary). After the
+`/docker-entrypoint-initdb.d` (creating the directory if necessary). After the
-> entrypoint calls `initdb` to create the default `postgres` user and database,
+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
+it will run any `*.sql` files and source any `*.sh` scripts found in that
-> directory to do further initialization before starting the service.
+directory to do further initialization before starting the service.*
 
 This directory contains a script to create multiple databases using that
 mechanism.
@@ -20,7 +18,8 @@ mechanism.
 ### 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 and each entry with database, user and password separated by double colon in `POSTGRES_MULTIPLE_DATABASES` environment variable as follows
+`/docker-entrypoint-initdb.d` and declare database names separated by commas in
+`POSTGRES_MULTIPLE_DATABASES` environment variable as follows
 (`docker-compose` syntax):
 
     myapp-postgresql:
@@ -28,10 +27,9 @@ Clone the repository, mount its directory as a volume into
         volumes:
             - ../docker-postgresql-multiple-databases:/docker-entrypoint-initdb.d
         environment:
-            - POSTGRES_MULTIPLE_DATABASES=db1:pwd1,db2:pwd2
+            - POSTGRES_MULTIPLE_DATABASES=db1,db2
             - POSTGRES_USER=myapp
             - POSTGRES_PASSWORD=
-            - POSTGRES_DB=db
 
 ### By building a custom image
 
@@ -47,14 +45,13 @@ to the container:
     myapp-postgresql:
         image: eu.gcr.io/your-project/postgres-multi-db
         environment:
-            - POSTGRES_MULTIPLE_DATABASES=db1:pwd1,db2:pwd2
+            - POSTGRES_MULTIPLE_DATABASES=db1,db2
             - POSTGRES_USER=myapp
             - POSTGRES_PASSWORD=
-            - POSTGRES_DB=db
 
 ### 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:pwd1","test-db-2:pwd2"
+            - POSTGRES_MULTIPLE_DATABASES="test-db-1","test-db-2"

create-multiple-postgresql-databases.sh

@@ -4,13 +4,10 @@ set -e
 set -u
 
 function create_user_and_database() {
-    local dbinfo=$1
+	local database=$1
-    IFS=":" read -r database password <<< "$dbinfo"
 	echo "  Creating user and database '$database'"
-    echo "Creating database '$database' with user '$user' and password '$password'"
 	psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "postgres" <<-EOSQL
 	    SELECT 'CREATE USER ' || LOWER(TRIM('$database')) AS create_user_query WHERE NOT EXISTS (SELECT FROM pg_catalog.pg_roles WHERE rolname = LOWER(TRIM('$database')));\gexec
-      	ALTER USER $database WITH ENCRYPTED PASSWORD '$password';
 	    SELECT 'CREATE DATABASE ' || LOWER(TRIM('$database')) || ' WITH OWNER "$POSTGRES_USER" ENCODING "UTF8" LC_COLLATE = "en_US.UTF-8" LC_CTYPE = "en_US.UTF-8" TEMPLATE="template0"' AS create_table_query WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = LOWER(TRIM('$database')));\gexec
 	    GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
 EOSQL