[ci] Add ssh token for publishing gh-pages

.gitlab-ci.yml

@@ -107,14 +107,17 @@ default:
     GITHUB_PR_TOKEN:
       vault:                       cicd/gitlab/parity/GITHUB_PR_TOKEN@kv
       file:                        false
+    GITHUB_TOKEN:
+      vault:                       cicd/gitlab/parity/GITHUB_TOKEN@kv
+      file:                        false
     GITHUB_USER:
       vault:                       cicd/gitlab/$CI_PROJECT_PATH/GITHUB_USER@kv
       file:                        false
     GITHUB_RELEASE_TOKEN:
       vault:                       cicd/gitlab/$CI_PROJECT_PATH/GITHUB_RELEASE_TOKEN@kv
       file:                        false
-    GITHUB_TOKEN:
-      vault:                       cicd/gitlab/$CI_PROJECT_PATH/GITHUB_TOKEN@kv
+    GITHUB_SSH_PRIV_KEY:
+      vault:                       cicd/gitlab/$CI_PROJECT_PATH/GITHUB_SSH_PRIV_KEY@kv
       file:                        false
     MATRIX_ACCESS_TOKEN:
       vault:                       cicd/gitlab/$CI_PROJECT_PATH/MATRIX_ACCESS_TOKEN@kv
@@ -554,12 +557,15 @@ publish-rustdoc:
     - job:                         build-rustdoc
       artifacts:                   true
   script:
-    - rm -rf /tmp/*
+    # setup ssh
+    - eval $(ssh-agent)
+    - ssh-add - <<< ${GITHUB_SSH_PRIV_KEY}
+    - mkdir ~/.ssh && touch ~/.ssh/known_hosts
+    - ssh-keyscan -t rsa github.com >> ~/.ssh/known_hosts
     # Set git config
-    - rm -rf .git/config
     - git config user.email "devops-team@parity.io"
     - git config user.name "${GITHUB_USER}"
-    - git config remote.origin.url "https://${GITHUB_TOKEN}@github.com/paritytech/polkadot.git"
+    - git config remote.origin.url "git@github.com:/paritytech/${CI_PROJECT_NAME}.git"
     - git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
     - git fetch origin gh-pages
     # Save README and docs