https://freebsdfoundation.org/project/oci-container-support/

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OCI Container Support

In Progress

Implementation of OCI containers on Jails/Bhyve with support for
podman and buildah. 

Contact: Doug Rabson <dfr@rabson.org>

The Open Container Initiative (OCI) develops open industry standards
for cloud native container formats and runtimes, ensuring platform
consistency. An OCI working group is defining these standards for
FreeBSD, with implementations using jails and potentially lightweight
VMs with FreeBSD's bhyve hypervisor (which would allow support for
other operating systems besides FreeBSD in a container on a FreeBSD
host).

Doug Rabson, a FreeBSD project member, has developed ocijail, an
experimental OCI-compatible runtime for FreeBSD jails. This tool is
designed to integrate with container management systems like Podman
and Buildah, providing a comprehensive container management
experience.

Benefits of Running Applications in OCI Containers:

  * Standardization: Ensures compatibility and interoperability
    across different environments, simplifying development and
    deployment.
  * Portability: Encapsulates applications and dependencies, allowing
    them to run consistently on any OCI-supporting environment.
  * Efficiency: Lightweight and efficient, enabling quick startup
    times and optimal resource usage, reducing overhead compared to
    traditional VMs.
  * Isolation: It provides strong isolation similar to VMs but with
    less overhead, making it ideal for microservices and modern
    architectures. It ensures secure, independent application
    operation, prevents conflicts, and enhances system stability.

Doug Rabson's GitHub repository hosts the initial code for
integration with Podman and Buildah. You can watch Doug Rabson's talk
on the implementation of ocijail during Container Plumbing Day before
Open Source Summit Seattle here. 

Doug also wrote an article about pre-built OCI FreeBSD container
image implementation options. The FreeBSD Project envisions that this
distribution will be managed using existing container image
infrastructure, e.g., Docker Hub or the GitHub container registry, or
potentially, by hosting an image registry in FreeBSD-owned
infrastructure.

More Information: ocijail (GitHub)

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