镜像
Windows和Mac的桌面版Docker自带buildx命令，但是Linux环境下的Docker需要自行安装buildx （https://github.com/docker/buildx）
https://docs.docker.com/buildx/working-with-buildx/
本节课使用的源码 https://github.com/xiaopeng163/flask-redis
登录dockerhub
docker login
进入源码目录（Dockerfile所在目录）
git clone https://github.com/xiaopeng163/flask-redis
cd flask-redis构建
PS C:\Users\Peng Xiao\flask-redis> docker login Authenticating with existing credentials... Login Succeeded PS C:\Users\Peng Xiao\flask-redis> docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64 -t xiaopeng163/flask-redis:latest . [+] Building 0.0s (0/0) error: multiple platforms feature is currently not supported for docker driver. Please switch to a different driver (eg. "docker buildx create --use") PS C:\Users\Peng Xiao\flask-redis> PS C:\Users\Peng Xiao\flask-redis> docker buildx ls NAME/NODE DRIVER/ENDPOINT STATUS PLATFORMS desktop-linux docker desktop-linux desktop-linux running linux/amd64, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6 default * docker default default running linux/amd64, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6 PS C:\Users\Peng Xiao\flask-redis> docker buildx create --name mybuilder --use mybuilder PS C:\Users\Peng Xiao\flask-redis> docker buildx ls NAME/NODE DRIVER/ENDPOINT STATUS PLATFORMS mybuilder * docker-container mybuilder0 npipe:////./pipe/docker_engine inactive desktop-linux docker desktop-linux desktop-linux running linux/amd64, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6 default docker default default running linux/amd64, linux/arm64, linux/riscv64, linux/ppc64le, linux/s390x, linux/386, linux/arm/v7, linux/arm/v6 PS C:\Users\Peng Xiao\flask-redis> docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64 -t xiaopeng163/flask-redis:latest .