Build and publish Docker image

.drone.yml

@@ -25,3 +25,12 @@ steps:
       from_secret: discord_webhook_id
     webhook_token:
       from_secret: discord_webhook_token
+- name: docker
+  image: plugins/docker
+  settings:
+    repo: pocketjawa/discord-buttsbot
+    auto_tag: true
+    username:
+      from_secret: docker_username
+    password:
+      from_secret: docker_password