docs(v2): Added drone.io publish docs #3491 (#3492)

website/docs/deployment.md

@@ -263,6 +263,40 @@ steps:
     displayName: 'yarn install and build'
 ```
 
+### Using Drone
+
+1.  Create a new ssh key that will be the [deploy key](https://docs.github.com/en/free-pro-team@latest/developers/overview/managing-deploy-keys#deploy-keys) for your project.
+1.  Name your private and public keys to be specific and so that it does not overwrite your other [ssh keys](https://docs.github.com/en/free-pro-team@latest/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent).
+1.  Go to https://github.com/USERNAME/REPO/settings/keys and add a new deploy key by pasting in our public key you just generated.
+1.  Open your Drone.io dashboard and login. The URL looks like https://cloud.drone.io/USERNAME/REPO.
+1.  Click on the repository, click on activate repository, and add a secret called `git_deploy_private_key` with your private key value that you just generated.
+1.  Create a `.drone.yml` on the root of your repository with below text.
+
+```yaml
+# .drone.yml
+kind: pipeline
+type: docker
+trigger:
+  event:
+    - tag
+- name: Website
+  image: node
+  commands:
+    - mkdir -p $HOME/.ssh
+    - ssh-keyscan -t rsa github.com >> $HOME/.ssh/known_hosts
+    - echo "$GITHUB_PRIVATE_KEY > $HOME/.ssh/id_rsa"
+    - chmod 0600 $HOME/.ssh/id_rsa
+    - cd website
+    - npm i
+    - npm run publish-gh-pages
+  environment:
+    USE_SSH: true
+    GIT_USER: $DRONE_COMMIT_AUTHOR
+    GITHUB_PRIVATE_KEY: git_deploy_private_key
+```
+
+Now, whenever you push a new tag to github, this trigger will start the drone ci job to publish your website.
+
 ## Deploying to Netlify
 
 To deploy your Docusaurus 2 sites to [Netlify](https://www.netlify.com/), first make sure the following options are properly configured: