The pipeline created two tags if an SDK was built, one for the SDK and
one for the OS build (which was a free-standing tag or a local state
that was equivalent to the existing tag of the same name). The
nightlies created update commits on the main branch, even if no change
was done, and on the release branches we lacked these commits.
Create the release tag in the nightly SDK bootstrap already and reuse
it for the nightly OS build. Instead of local state, checkout the
existing tags explicitly. Extend the nightly update commit logic to
cover release branches and detect if we can skip building because no
changes were done.
This change has sdk_bootstrap update the origin branch when run from the
main branch, updating the SDK and OS version in 'main' for each SDK
bootstrap build.
Release / maintenance branches have the SDK version set in the
versionfile at release time. But main is never updated.
Updating the versionfile in main when a new SDK is built ensures that
dev branches based on main will also use the correct SDK version (e.g.
in subsequent CI builds).
ci-automation builds on the SDK container and simplifies CI automation
build tasks (SDK bootstrap, SDK container, packages, image, VMs).
See ci-automation/README.md for a brief introduction.
Signed-off-by: Thilo Fromm <thilo@kinvolk.io>
