added gitlab CD step to automatically deploy posts

.gitlab-ci.yml

@@ -0,0 +1,13 @@
+deploy-prod:
+  stage: deploy
+  image: alpine
+  before_script:
+    - 'command -v ssh-agent > /dev/null || (apk add --update openssh-client)'
+    - eval $(ssh-agent -s)
+    - echo "$GITLAB_LIVILLA_PRIV" | tr -d '\r' | ssh-add -
+    - mkdir -p ~/.ssh
+    - chmod 700 ~/.ssh
+    - ssh-keyscan $LIVILLA_IP >> ~/.ssh/known_hosts
+    - chmod 644 ~/.ssh/known_hosts
+  script:
+    - ssh $LIVILLA_USER@$LIVILLA_IP 'cd phaetere/blog_posts;git pull'