配置文件中增加captcha的下载。

.drone.yml

@@ -7,6 +7,7 @@ build:
   commands:
     - git clone https://git.qianqiusoft.com/qianqiusoft/light-apiengine.git $GOPATH/src/git.qianqiusoft.com/qianqiusoft/light-apiengine
     - git clone https://git.qianqiusoft.com/qianqiusoft/light-apiengine-client.git $GOPATH/src/git.qianqiusoft.com/qianqiusoft/light-apiengine-client
+    - git clone https://github.com/dchest/captcha.git $GOPATH/src/github.com/dchest/captcha
     - godep
     - CGO_ENABLED=0 go build -a -ldflags '-s'
     - tar zcf light-apiengine.tar.gz conf sqlconfig doc web light-apiengine