Add drone.yml

.drone.yml

@@ -0,0 +1,22 @@
+kind: pipeline
+name: default
+
+steps:
+  - name: build
+    image: ruby
+    commands:
+      - gem install bundler
+      - bundle install
+      - bundle exec jekyll build
+  
+  - name: docker
+    image: plugins/docker
+    settings:
+      repo: docker.graffen.io/graffen.dk-website
+      registry: docker.graffen.io
+      tags: 
+        - "${DRONE_BUILD_NUMBER}"
+        - "latest"
+    when:
+      branch:
+        - master