Add platform linux/amd64 for the goreleaser docker image (#140)

* Add platform linux/amd64 for the goreleaser docker image

* Add usage in the readme file

Author: LinuxSuRen

.goreleaser.yml

@@ -98,4 +98,4 @@ dockers:
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.source=https://github.com/LinuxSuRen/http-downloader"
-      - "--platform=linux/arm64"
+      - "--platform=linux/amd64"

README-zh.md

@@ -49,3 +49,15 @@ hd get --pre ks
 * 多线程
 * 断点续传 (TODO)
 * 对 GitHub release 文件下载（安装）友好
+
+## 使用多阶段构建
+你想要在 Docker 构建中下载工具吗？这个很容易的，请查看下面的例子：
+
+```dockerfile
+FROM ghcr.io/linuxsuren/hd:v0.0.40 as downloader
+RUN hd install kubesphere-sigs/[email protected]
+
+FROM alpine:3.10
+COPY --from=downloader /usr/local/bin/ks /usr/local/bin/ks
+CMD ["ks"]
+```

README.md

@@ -54,6 +54,18 @@ When you first run it, please init via: `hd fetch`
 
 then you can search it by a keyword: `hd search jenkins`
 
+## Use multi-stage builds
+Do you want to download tools in the Docker builds? It's pretty easy. Please see the following example:
+
+```dockerfile
+FROM ghcr.io/linuxsuren/hd:v0.0.40 as downloader
+RUN hd install kubesphere-sigs/[email protected]
+
+FROM alpine:3.10
+COPY --from=downloader /usr/local/bin/ks /usr/local/bin/ks
+CMD ["ks"]
+```
+
 ## As a library
 You can import it from `github.com/linuxsuren/http-downloader/pkg/installer`, then put the following code to your CLI. 
 It can help you to download desired tools: