Simplicite 4.0 release P21

The Simplicité platform version 4.0 P21 has been released. See see the release note for details.

The instance template package is available on the platform Git repository: https://<username>@platform.git.simplicite.io/template-4.0.git on the release with the P21 tag.

The corresponding Docker images are available on DockerHub

Please make sure you upgrade all your version 4.0 instances.