Merge pull request kubernetes-csi#448 from pohly/github-actions

build: use custom SSH key

Author: k8s-ci-robot

.github/workflows/publish.yml

@@ -1,4 +1,4 @@
-name: push
+name: publish
 
 # Controls when the workflow will run
 on:
@@ -31,3 +31,9 @@ jobs:
         with:
           branch: gh-pages
           folder: docs
+          git-config-name: GitHub Actions
+          git-config-email: github-actions@kubernetes-csi
+          # This secret was created in the repo's settings under "Secrets".
+          # It contains an SSH private key created specifically for this job.
+          # The corresponding public key was added to the repo's deploy keys.
+          ssh-key: ${{ secrets.DEPLOY_KEY }}