*`IBM_INSTANCE_ID`: Used for KMS (Key Management System) IBM Key Protect access (see [`.github/workflows/encryption-pvc-kms-ibm-kp/action.yml`](https://github.com/rook/rook/blob/master/.github/workflows/encryption-pvc-kms-ibm-kp/action.yml)).
*`IBM_SERVICE_API_KEY`: Used for KMS (Key Management System) IBM Key Protect access (see [`.github/workflows/encryption-pvc-kms-ibm-kp/action.yml`](https://github.com/rook/rook/blob/master/.github/workflows/encryption-pvc-kms-ibm-kp/action.yml)).
* Publishing:
*`DOCKER_USERNAME` + `DOCKER_PASSWORD`: Username and password of registry.