Add Drone CI config to mirror to GitHub

.drone.yml

@@ -0,0 +1,18 @@
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  - name: mirror-to-github
+    image: alpine:latest
+    environment:
+      SSH_PRIVATE_KEY:
+        from_secret: GITHUB_DEPLOY_KEY
+    commands:
+      - apk add --no-cache openssh git
+      - mkdir -p /root/.ssh
+      - echo "$SSH_PRIVATE_KEY" > /root/.ssh/id_rsa
+      - chmod 600 /root/.ssh/id_rsa
+      - ssh-keyscan github.com >> /root/.ssh/known_hosts
+      - git remote add github git@github.com:ekaropolus/polisplexity.tech.git
+      - git push --mirror github