Add drone pipeline

.drone.yml

@@ -0,0 +1,27 @@
+kind: pipeline
+type: docker
+name: default
+
+steps:
+- name: test
+  image: golang:1.14-alpine
+  commands:
+  - cd coredns && go test
+- name: build
+  image: golang:1.14-alpine
+  environment:
+  - CGO_ENABLED=0
+  - GOOS=linux
+  - GOARCH=amd64
+  commands:
+  - cd coredns && go build
+- name: release
+  image: plugins/gitea-release
+  settings:
+    base_url: https://git.makerforce.io
+    secrets: [ gitea_token ]
+    files: coredns/coredns
+  when:
+    event: tag
+
+# vim: ts=2:sw=2

README.md

@@ -1,5 +1,5 @@
 
-# alias
+# alias [![Build Status](https://ci.makerforce.io/api/badges/ambrose/alias/status.svg)](https://ci.makerforce.io/ambrose/alias)
 
 The *alias* plugin eliminates CNAME records from zone apex by making the subsequent resolved records look like they belong to the zone apex. This behaves similarily to [CloudFlare's Zone Flattening](https://support.cloudflare.com/hc/en-us/articles/200169056-CNAME-Flattening-RFC-compliant-support-for-CNAME-at-the-root).