GitLab CI / U-Boot runner container

In order to have a reproducible and portable build environment for CI we use a container for building in. This means that developers can also reproduce the CI environment, to a large degree at least, locally. This file is located in the tools/docker directory. To build the image yourself

sudo docker build -t your-namespace:your-tag .

Or to use an existing container

sudo docker pull trini/u-boot-gitlab-ci-runner:jammy-20240227-14Mar2024