Add drone automation

.drone.yml

@@ -0,0 +1,29 @@
+kind: pipeline
+name: default
+
+steps:
+  - name: build_draftbot
+    image: golang
+    commands:
+      - CGO_ENABLED=0 GOPROXY=https://modules.fromouter.space go build -o release/draftbot git.fromouter.space/mcg/mlp-server-tools/draftbot
+    volumes:
+      - name: gopath
+        path: /go
+
+  - name: publish_draftbot
+    image: plugins/docker
+    settings:
+      auto_tag: true
+      dockerfile: Dockerfile.publish
+      build_args: MODULE_PATH=draftbot
+      repo: hamcha/draftbot
+      target: final
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+    when:
+      event:
+        - push
+        - tag
+      branch: master

README.md

@@ -1,5 +1,7 @@
 # Server tools
 
+[![Build Status](https://drone.zyg.ovh/api/badges/mcg/mlp-server-tools/status.svg)](https://drone.zyg.ovh/mcg/mlp-server-tools)
+
 Tools and services needed for the MCG backend to work.
 
 ## Inside this repository