CI: Introduce docs pipeline (#45454) (#45669)

* Add docs.star

* Fixes in drone yaml

* Add grabpl

* Remove unnecessary steps

(cherry picked from commit f2e03cdb107eb283416885a73051c1ff86eb8b7f)

* Rename docs pipeline

* Exclude docs related steps from PR pipelines

* Add packages/** trigger

* Remove packages exclusion from pr pipelines

(cherry picked from commit 434697e0fd)

scripts/drone/pipelines/docs.star

@@ -0,0 +1,55 @@
+load(
+    'scripts/drone/steps/lib.star',
+    'initialize_step',
+    'download_grabpl_step',
+    'lint_frontend_step',
+    'codespell_step',
+    'shellcheck_step',
+    'build_frontend_step',
+    'test_frontend_step',
+    'build_storybook_step',
+    'build_frontend_docs_step',
+    'build_docs_website_step',
+)
+
+load(
+    'scripts/drone/services/services.star',
+    'integration_test_services',
+    'ldap_service',
+)
+
+load(
+    'scripts/drone/utils/utils.star',
+    'pipeline',
+)
+
+ver_mode = 'pr'
+
+def docs_pipelines(edition):
+    steps = [download_grabpl_step()] + initialize_step(edition, platform='linux', ver_mode=ver_mode)
+    steps.extend([
+        build_frontend_step(edition=edition, ver_mode=ver_mode),
+    ])
+
+    # Insert remaining steps
+    steps.extend([
+        build_frontend_docs_step(edition=edition),
+        build_docs_website_step(),
+    ])
+
+    trigger = {
+        'event':  [
+            'pull_request',
+        ],
+        'paths': {
+            'include': [
+                'docs/**',
+                'packages/**',
+            ],
+        },
+    }
+    return [
+        pipeline(
+            name='pr-docs', edition=edition, trigger=trigger, services=[], steps=steps,
+        ),
+    ]

scripts/drone/pipelines/pr.star

@@ -18,8 +18,6 @@ load(
     'e2e_tests_step',
     'e2e_tests_artifacts',
     'build_storybook_step',
-    'build_frontend_docs_step',
-    'build_docs_website_step',
     'copy_packages_for_docker_step',
     'build_docker_images_step',
     'postgres_integration_tests_step',
@@ -100,8 +98,6 @@ def pr_pipelines(edition):
         e2e_tests_artifacts(edition=edition),
         build_storybook_step(edition=edition, ver_mode=ver_mode),
         test_a11y_frontend_step(ver_mode=ver_mode, edition=edition),
-        build_frontend_docs_step(edition=edition),
-        build_docs_website_step(),
         copy_packages_for_docker_step(),
         build_docker_images_step(edition=edition, ver_mode=ver_mode, archs=['amd64',]),
     ])
@@ -116,7 +112,14 @@ def pr_pipelines(edition):
         ])
 
     trigger = {
-        'event': ['pull_request',],
+        'event': [
+            'pull_request',
+        ],
+        'paths': {
+            'exclude': [
+                'docs/**',
+            ],
+        },
     }
 
     return [