Add docs build pipeline to drone config

.drone.yml

@@ -1,3 +1,86 @@
+kind: pipeline
+type: docker
+name: docs
+steps:
+  # ============ BUILD STEPS ===============
+  - name: build documentation
+    image: glmdev/node-pnpm:latest
+    commands:
+      - pnpm i --silent
+      - pnpm docs:build
+      - cd docs && tar czf ../extollo_api_documentation.tar.gz www
+
+  # =============== DEPLOY STEPS ===============
+  - name: copy artifacts to static host
+    image: appleboy/drone-scp
+    settings:
+      host:
+        from_secret: docs_deploy_host
+      username:
+        from_secret: docs_deploy_user
+      key:
+        from_secret: docs_deploy_key
+      port: 22
+      source: extollo_api_documentation.tar.gz
+      target: /var/nfs/general/static/sites/extollo
+    when:
+      event: promote
+      target: docs
+
+  - name: deploy artifacts on static host
+    image: appleboy/drone-ssh
+    settings:
+      host:
+        from_secret: docs_deploy_host
+      username:
+        from_secret: docs_deploy_user
+      key:
+        from_secret: docs_deploy_key
+      port: 22
+      script:
+        - cd /var/nfs/general/static/sites/extollo
+        - rm -rf docs
+        - tar xzf extollo_api_documentation.tar.gz
+        - rm -rf extollo_api_documentation.tar.gz
+        - mv www docs
+    when:
+      event: promote
+      target: docs
+
+  # =============== BUILD NOTIFICATIONS ===============
+  - name: send build success notifications
+    image: plugins/webhook
+    settings:
+      urls:
+        from_secret: notify_webhook_url
+      content_type: application/json
+      template: |
+        {
+          "title": "Drone-CI [extollo/docs @ ${DRONE_BUILD_NUMBER}]",
+          "message": "Build & deploy completed successfully.",
+          "priority": 4
+        }
+    when:
+      status: success
+      event:
+        - promote
+
+  - name: send build error notifications
+    image: plugins/webhook
+    settings:
+      urls:
+        from_secret: notify_webhook_url
+      content_type: application/json
+      template: |
+        {
+          "title": "Drone-CI [extollo/docs @ ${DRONE_BUILD_NUMBER}]",
+          "message": "Documentation build failed!",
+          "priority": 6
+        }
+    when:
+      status: failure
+---
+
 kind: pipeline
 name: default
 type: docker