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@@ -0,0 +1,51 @@ +This repository contains files for a Jenkins build pipeline, using Docker to +build in known systems. + +The first tranche of jobs takes base system images (Debian, Fedora, and Ubuntu) +from the canonical upstream Docker Hub, and adds basic toolchain packages, +as well as a user to build under. These images are stored to a local Docker +registry (like the Hub, but self-hosted) for later use, tagged by date. + +The second tranche of jobs takes these produced system images, and adds build +dependencies for various packages. For instance, the Wayland base image will +have all the dependencies to build libevdev, libinput, wayland, +wayland-protocols, and weston. These images are also stored to the Docker +registry for later use, with a stable tag. Updating the first-tranche images +will also trigger a rebuild of these images. + +The third tranche of jobs uses these final produced images as a host in which +to build the packages, e.g. Wayland. These are triggered by upstream activity, +e.g. repository commits or code review requests. These jobs use a stable tag +of the images produced by the second-tranche jobs; 'stability' is determined +by running a test build of these jobs, and promoting if the builds succeed +against the new base images. + + +REQUIREMENTS +============ + +Jenkins 2.0: +Pipeline and Docker plugins, Matrix job plugin + +jenkins-job-builder and jenkins-job-builder-pipeline forks with fixes: +https://github.com/fooishbar/jenkins-job-builder +https://github.com/fooishbar/jenkins-job-builder-pipeline + + +JOB FLOW +======== + +The core entrypoint is docker-images/base-images/all, which runs in a multi-axis +configuration. Each axis simply spawns a pipeline job named +docker-images/base-images/$platform-$arch, which performs the actual work of +generating a base image for that architecture through a Pipeline job defined +in base-images/build-image.jpl. The definitions for all these jobs are in +base-images/base-images.jjb. + +For each base image build, it will spawn rebuilds (with the same tag/stamp) of +any dependent images. Currently, this is the docker-images/wayland-images/* +group, with a core pipeline defined in wayland-images/build-image.jpl. + +Dependent image builds then spawn builds (e.g. wayland/build/*) within the +container it just built, as a sanity check; if these are successful, then the +dependent build will be promoted. |