Add database configuration to .env

.env

@@ -99,7 +99,7 @@ KC_DB_PASSWORD=postgres
 # For local development
 # KC_DB_OPTS="--db postgres --db-url jdbc:postgresql://localhost:5432/keycloak --db-username postgres --db-password postgres"
 # For production (commented out for safety)
-# KC_DB_OPTS="--db postgres --db-url jdbc:postgresql://kc-ssi-instance-1.clh0lvey1bcg.eu-north-1.rds.amazonaws.com:5432/kc_ssi_db --db-username kc_ssi_user --db-password adorsys2+24"
+KC_DB_OPTS="--db postgres --db-url jdbc:postgresql://kc-ssi-instance-1.clh0lvey1bcg.eu-north-1.rds.amazonaws.com:5432/kc_ssi_db --db-username kc_ssi_user --db-password adorsys2+24"
 
 # Keycloak start command
 # For AWS: Remember to provide cert and key pem files ($WORK_DIR/../env/.env)