Buildx
官方：
二进制安装
DOCKER_CONFIG=${DOCKER_CONFIG:-$HOME/.docker}
mkdir -p $DOCKER_CONFIG/cli-plugins
curl -SL https://github.com/docker/buildx/releases/download/v0.12.1/buildx-v0.12.1.linux-amd64 -o $DOCKER_CONFIG/cli-plugins/docker-buildx
chmod +x $DOCKER_CONFIG/cli-plugins/docker-buildx