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本文作者：丁辉

DockerHub上传双架构镜像

Docker manifest 推送双架构镜像

官网文档

构建并推送镜像

X85执行

docker build -t offends/demo-x86:v1 .
docker push offends/demo-x86:v1

arm执行

docker build -t offends/demo-arm:v1 .
docker push offends/demo-arm:v1

创建 manifest

docker manifest create offends/demo:v1  \
offends/demo-x86:v1 \
offends/demo-arm:v1

为镜像指定架构

docker manifest annotate offends/demo-x86:v1 \
offends/demo-x86:v1 \
--os linux --arch x86_64

docker manifest annotate offends/demo-arm:v1 \
offends/demo-arm:v1 \
--os linux --arch arm64 --variant v8

查看

docker manifest inspect offends/demo:v1

推送
```
docker manifest push offends/demo:v1
```

Docker Buildx 推送双架构镜像

Buildx二进制文件下载

模拟仓库文档

官网文档

安装 Buildx

mkdir -p ~/.docker/cli-plugins
mv buildx-v*.linux-amd64 ~/.docker/cli-plugins/docker-buildx
chmod +x ~/.docker/cli-plugins/docker-buildx
docker buildx version

添加模拟仓库
```
docker run --privileged --rm tonistiigi/binfmt --install all
```
内核版本需要升级，如果过低无法添加成功

查看

docker buildx ls
#一下是输出
NAME/NODE DRIVER/ENDPOINT STATUS  BUILDKIT     PLATFORMS
default * docker                               
  default default         running v0.8+unknown linux/amd64, linux/386, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/arm/v7, linux/arm/v6

创建 builder 示例
```
docker buildx create --name dmeo --use
```

构建混合建构镜像

docker buildx build --platform linux/amd64,linux/arm64/v8 -t demo:v1 --push .

Docker Buildx使用私有仓库推送双架构镜像

部署私有镜像仓库

Docker hub文档

GitHub文档

启动镜像仓库

docker run -d \
    --name docker-registry \
    --restart=always \
    -p 5000:5000 \
    -v /root/private-registry:/var/lib/registry \
    registry

将本机Docker添加非安全仓库

Buildx 只允许 https 协议的镜像仓库使用，这里的方法之建议测试使用

cat > /etc/docker/daemon.json <<EOF
{
  "experimental": true,
  "insecure-registries": ["192.168.1.10:5000"]
}
EOF

重启 docker 进程启用
```
systemctl restart docker
```

将 buildkit 镜像推送到私仓

docker tag moby/buildkit:buildx-stable-1 192.168.1.10:5000/buildkit:buildx-stable-1
docker push 192.168.1.10:5000/buildkit:buildx-stable-1

新增 buildkit 私仓配置

cat > /etc/buildkit/buildkitd.toml << EOF
debug = true
[registry."192.168.1.10:5000"]
  http = true
  insecure = true
EOF

创建 builder

docker buildx create --use \
  --name builder \
  --driver-opt image=192.168.1.10:5000/buildkit:buildx-stable-1 \
  --config /etc/buildkit/buildkitd.toml