Merge pull request #5 from MEITREX/db

Database: Update init script & increase max connections

Author: myluki2000

docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   database:
     image: pgvector/pgvector:pg16
+    command: -c 'max_connections=500'
     restart: unless-stopped
     expose:
       - 5432

pg-init-scripts/create-multiple-databases.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Script taken with modifications from https://dev.to/bgord/multiple-postgres-databases-in-a-single-docker-container-417l
+
+set -e
+set -u
+
+function create_user_and_database() {
+	local database=$1
+	echo "  Creating user and database '$database'"
+	psql -d postgres -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+	    CREATE DATABASE "$database";
+	    GRANT ALL PRIVILEGES ON DATABASE "$database" TO "$POSTGRES_USER";
+EOSQL
+}
+
+for var in $(env | grep '^POSTGRES_CREATE_DB_' | awk -F '=' '{print $2}'); do
+	echo "Creating database: $var"
+	create_user_and_database $var
+done