[dev_docs] Add CI tutorial (#124577)

* [dev_docs] Add CI tutorial

* typo

* add comments

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

dev_docs/tutorials/ci.mdx

@@ -0,0 +1,48 @@
+---
+id: kibDevTutorialCI
+slug: /kibana-dev-docs/tutorials/ci
+title: CI
+summary: CI
+date: 2022-02-03
+tags: ['kibana', 'onboarding', 'dev', 'ci']
+---
+
+## CI
+
+Kibana uses BuildKite to run a series of checks against each pull requests and tracked branch.  Results are posted in pull requests as comments and from the BuildKite UI
+
+### Comments
+
+Comments in pull requests can be used to trigger CI operations.
+
+#### `buildkite test this`
+
+Run test suites and checks.
+
+#### `@elasticmachine merge upstream`
+
+Merge in the most recent changes from upstream.
+
+#### `@elasticmachine run elasticsearch-ci/docs`
+
+Build documentation from the root `docs` folder.
+
+### Labels
+
+Labels can be added to a pull request to run conditional pipelines.
+
+#### `ci:deploy-cloud`
+
+Deploy a pull request to Elastic Cloud.  Deployment information will be available as an annotation at the top of a build.  Access credentials will be available in vault.
+
+#### `ci:build-all-platforms`
+
+Build Windows, macOS, and Linux archives.  Artifacts will be available on the "Artifacts" tab of the "Build Kibana Distribution and Plugins" step.
+
+#### `ci:build-os-packages`
+
+Build Docker images, and Debian and RPM packages.  Artifacts will be available on the "Artifacts" tab of the "Build Kibana Distribution and Plugins" step.
+
+#### `ci:all-cypress-suites`
+
+By default, Cypress test suites are only run when code changes are made in certain files, typically files with overlapping test coverage.  Adding this label will cause all Cypress tests to run.

nav-kibana-dev.docnav.json

@@ -46,6 +46,7 @@
           "id": "kibDevTutorialBuildingDistributable",
           "label": "Building a Kibana distributable"
         },
+        { "id": "kibDevTutorialCI" },
         { "id": "kibDevTutorialServerEndpoint" },
         { "id": "kibDevTutorialAdvancedSettings"}
       ]