Build cloud native images on tags

When on a tag, trigger a multi-project pipeline in the CNG repostiory.

Opting for a trigger rather than an addition to our release-tools
project for a few reasons:

- The Dockerfiles in the CNG image repo change infrequently, and as a result
I don't feel the need/overhead for stable branches in that repo at this time
- My intent with the CNG repo, is that once stable, the Dockerfiles
would actualy move to their component projects, to be versioned with the
code they are building
- It is likely that we will want to followup with a manually triggered package
for branches for devs, and possibly review apps, so it made sense to
build the CNG ci jobs to accept this sort of pipeline.

1 files changed, 61 insertions, 0 deletions

diff --git a/scripts/trigger-build-cloud-native b/scripts/trigger-build-cloud-native
new file mode 100755
index 00000000000..b6ca75a588d
--- /dev/null
+++ b/scripts/trigger-build-cloud-native
@@ -0,0 +1,61 @@
+#!/usr/bin/env ruby
+
+require 'gitlab'
+
+#
+# Configure credentials to be used with gitlab gem
+#
+Gitlab.configure do |config|
+  config.endpoint = 'https://gitlab.com/api/v4'
+end
+
+#
+# The remote project
+#
+GITLAB_CNG_REPO = 'gitlab-org/build/CNG'.freeze
+
+def ee?
+  ENV['CI_PROJECT_NAME'] == 'gitlab-ee' || File.exist?('CHANGELOG-EE.md')
+end
+
+def read_file_version(filename)
+  raw_version = File.read(filename).strip
+
+  # if the version matches semver format, treat it as a tag and prepend `v`
+  if raw_version =~ Regexp.compile(/^\d+\.\d+\.\d+(-rc\d+)?(-ee)?$/)
+    "v#{raw_version}"
+  else
+    raw_version
+  end
+end
+
+def params
+  params = {
+    'GITLAB_SHELL_VERSION' => read_file_version('GITLAB_SHELL_VERSION'),
+    'GITALY_VERSION' => read_file_version('GITALY_SERVER_VERSION'),
+    'TRIGGERED_USER' => ENV['GITLAB_USER_NAME'],
+    'TRIGGER_SOURCE' => "https://gitlab.com/gitlab-org/#{ENV['CI_PROJECT_NAME']}/-/jobs/#{ENV['CI_JOB_ID']}"
+  }
+
+  if ee?
+    params['EE_PIPELINE'] = 'true'
+    params['GITLAB_EE_VERSION'] = ENV['CI_COMMIT_REF_NAME']
+  else
+    params['CE_PIPELINE'] = 'true'
+    params['GITLAB_CE_VERSION'] = ENV['CI_COMMIT_REF_NAME']
+  end
+
+  params
+end
+
+#
+# Trigger a pipeline
+#
+def trigger_pipeline
+  # Create the cross project pipeline using CI_JOB_TOKEN
+  pipeline = Gitlab.run_trigger(GITLAB_CNG_REPO, ENV['CI_JOB_TOKEN'], 'master', params)
+
+  puts "Triggered https://gitlab.com/#{GITLAB_CNG_REPO}/pipelines/#{pipeline.id}"
+end
+
+trigger_pipeline