Added docker compose and configs

docker/pg-init/multi-pgsql-db.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+#
+# Adapted from:
+# https://github.com/mrts/docker-postgresql-multiple-databases/blob/master/create-multiple-postgresql-databases.sh
+
+set -e
+set -u
+
+function create_user_and_database() {
+        local database=$1
+        local username=$2
+        local password=$3
+        echo "  Creating user '$username' and database '$database'"
+        psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+            CREATE USER "$username" WITH PASSWORD '$password';
+            CREATE DATABASE "$database";
+            GRANT ALL PRIVILEGES ON DATABASE "$database" TO "$username";
+EOSQL
+}
+
+if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
+        echo "Multiple database creation requested: $POSTGRES_MULTIPLE_DATABASES"
+        for dbstr in $(echo $POSTGRES_MULTIPLE_DATABASES | tr ',' ' '); do
+                dbname=$(echo $dbstr | cut -d: -f1)
+                username=$(echo $dbstr | cut -d: -f2)
+                password=$(echo $dbstr | cut -d: -f3)
+                echo "Creating: db=$dbname user=$username"
+                create_user_and_database $dbname $username $password
+        done
+        echo "Multiple databases created"
+fi