add Drone CI

.drone.yml

@@ -0,0 +1,47 @@
+---
+kind: pipeline
+name: default
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+- name: publish
+  pull: default
+  image: plugins/docker:18.09
+  settings:
+    registry: https://registry.nixaid.com
+    repo: "registry.nixaid.com/${DRONE_REPO_NAMESPACE}/${DRONE_REPO_NAME}"
+    tags:
+    - latest
+    username:
+      from_secret: docker_username
+    password:
+      from_secret: docker_password
+    # storage_path: /drone/docker
+    # storage_driver: aufs
+    # ipv6: false
+    # debug: true
+  when:
+    branch:
+    - master
+    event:
+    - push
+    - tag
+
+- name: notify
+  pull: default
+  image: drillster/drone-email:latest
+  settings:
+    from: "Drone CI <noreply@nixaid.com>"
+    host: mx.nixaid.com
+    port: 587
+    subject: "NIXAID Drone Pipeline {{#success build.status}}SUCCESS{{else}}FAILURE{{/success}} Notification"
+  when:
+    event:
+    - push
+    - tag
+    status:
+    - success
+    - failure