meta-virtualization-extra

An extension of meta-virtualization that provides:

• Distro targets for building containers
  • pokyless (glibc)
  • rocky (musl)
• Machine targets for building containers
  • amd64-container
  • arm64-container
  • armv7-container
• Package group for using podman

Building Containers With Yocto/OE

The work here related to building containers with yocto/oe is based on meta-container-demo.

With the distro & machine targets mentioned above, one can build distroless app containers. The pokyless distro based on poky but it targets a dummy linux kernel and removes a bunch of DISTRO_FEATURES. The rocky distro is identical to pokyless but uses musl instead of glibc. Building the hello world flask app container provided by meta-virtualization results in a container tar image of about 10-12MB.

There are a number of talks that have been done related to this topic over the years (old to new).

• Building Container Images with OpenEmbedded and the Yocto Project - Scott Murray
• Integrating Docker containers in Yocto by Sandra Tobajas, Sébastien LE STUM
• Containers built for Embedded Systems and Servers
• Embedded Containers as a Deployment Component via the Yocto Project - Bruce Ashfield, AMD
• YPDD 2023 - meta-virtualization: moving past source-only, basic containers
• YPS 2023.11 - 2023/11/28 - Rudolf Streif - User Space Hands-on Class - Embedded Containers