diff --git a/pg-init-scripts/init_db.sh b/pg-init-scripts/init_db.sh
new file mode 100644
index 0000000..d4d7f0f
--- /dev/null
+++ b/pg-init-scripts/init_db.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -e
+set -u
+
+function create_user_and_database() {
+    local database=$1
+    echo "Creating user and database '$database'"
+    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" <<-EOSQL
+      CREATE USER $database;
+      CREATE DATABASE $database WITH OWNER $database TEMPLATE template0 ENCODING UTF8 LC_COLLATE 'en_US.UTF-8' LC_CTYPE 'en_US.UTF-8';
+      GRANT ALL PRIVILEGES ON DATABASE $database TO $database;
+      ALTER ROLE $database WITH LOGIN PASSWORD '$POSTGRES_PASSWORD';
+EOSQL
+}
+
+if [ -n "$POSTGRES_MULTIPLE_DATABASES" ]; then
+    echo "Creating databases: $POSTGRES_MULTIPLE_DATABASES"
+    for db in $(echo "$POSTGRES_MULTIPLE_DATABASES" | tr ',' ' '); do
+        create_user_and_database "$db"
+    done
+    echo "Multiple databases created"
+fi