NAME¶

kas-container - a setup tool for bitbake based projects

DESCRIPTION¶

The kas-container script is a wrapper to run kas inside a build container. It gives fine grained control over the data that is mapped into the build and decouples the build environment from the host system. For details, see Environment Variables. The wrapper also takes care of mounting the necessary directories and setting up the environment variables inside the container.

NOTE:

By default kas-container uses the official images provided by the kas project: ghcr.io/siemens/kas/kas[-isar]:<version>. To specify your own image set the KAS_CONTAINER_IMAGE environment variable. The kas-container script version should match the kas version inside the container. If kas detects that is was called from kas-container and the versions do not match, a warning is emitted. This limitation might be lessened in the future, once a stable interface between kas-container and kas is introduced.

As container backends, Docker and Podman are supported. To force the use of podman over docker, set KAS_CONTAINER_ENGINE=podman. For details, see Environment Variables.

Running under docker in rootless mode is partially supported. It is recommended to use a distinct KAS_WORK_DIR outside of the calling directory (repo-dir), as kas temporarily changes the ownership of the working directory during its operation. All files managed by kas (including the repos) must not be written to from the host. To completely remove all data managed by kas, use kas-container purge. This also restores the directory owners of the dirs passed to kas, so they can be removed from the host.

NOTE:

SEE ALSO¶

kas(1),

KAS¶

Part of the kas(1) suite.

AUTHOR¶

Daniel Wagner, Jan Kiszka, Claudius Heine

COPYRIGHT¶

Siemens and contributors, 2017-2025