diff --git a/.drone.yml b/.drone.yml
index c02f051..ad566dd 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -3,6 +3,12 @@ type: docker
 name: default
 
 steps:
+  - name: build
+    pull: if-not-exists
+    image: golang
+    commands:
+      - wget -q -T 180 https://dl.google.com/android/repository/android-ndk-r21b-linux-x86_64.zip
+      - unzip -q android-ndk-r21b-linux-x86_64.zip
   - name: docker
     pull: if-not-exists
     image: plugins/docker
diff --git a/Dockerfile b/Dockerfile
index 63cd902..45197eb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,8 @@ FROM golang:buster
 # 作者信息
 LABEL MAINTAINER="xiaoqidun@gmail.com"
 
-# 安装工具
-RUN apt-get update \
-    && apt-get install -y \
-    unzip
+# 安装android ndk
+COPY android-ndk-r21b /usr/local/android-ndk-r21b
+
+# 环境变量
+ENV PATH=$PATH:/usr/local/android-ndk-r21b/toolchains/llvm/prebuilt/linux-x86_64/bin
\ No newline at end of file