.drone.yml: Suffix Windows binary with .exe and add publish target

Author: leiless

.drone.yml

@@ -75,11 +75,17 @@ steps:
   commands:
     - cd /go/src/github.com/coredns/coredns
     - make
-    - mv coredns /go/src/github.com/leiless/dnsredir/bin/coredns_dnsredir-$GOOS-$GOARCH
+    - mv coredns /go/src/github.com/leiless/dnsredir/bin/coredns_dnsredir-$GOOS-$GOARCH.exe
 - name: calc-shasum256
   image: alpine
   commands:
     - uname -a
     - cd /go/src/github.com/leiless/dnsredir/bin
     - sha256sum coredns* | tee shasum256.txt
+- name: publish
+  image: plugins/github-release
+  settings:
+    api_key:
+      from_secret: github_token
+    files: bin/coredns*