docker镜像和容器（使用docker build kit构建树莓派上可用的Docker镜像）

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh
sudo usermod -aG ${user_name}

# 在树莓派系统中执行如下命令
git clone https://github.com/sameersbn/docker-bind.git
cd docker-bind
# 修改Dockerfile内容，注意！！此项设置与docker-bind有关，与build-kit的使用无关，仅做演示用
echo 'FROM ubuntu:focal-20200423 AS add-apt-repositories
COPY jcameron-key.asc jcameron-key.asc
RUN apt-get update \
 && DEBIAN_FRONTEND=noninteractive apt-get install -y gnupg \
 && apt-get install -y curl \
 && apt-key adv --fetch-keys https://www.webmin.com/jcameron-key.asc \
 && echo "deb http://download.webmin.com/download/repository sarge contrib" >> /etc/apt/sources.list

FROM ubuntu:focal-20200423

LABEL maintainer="sameer@damagehead.com"

ENV BIND_USER=bind \
  BIND_VERSION=9.16.1 \
  WEBMIN_VERSION=1.970 \
  DATA_DIR=/data

RUN apt-get update \
 && apt-get install -y curl

COPY --from=add-apt-repositories /etc/apt/trusted.gpg /etc/apt/trusted.gpg

COPY --from=add-apt-repositories /etc/apt/sources.list /etc/apt/sources.list

RUN rm -rf /etc/apt/apt.conf.d/docker-gzip-indexes \
 && apt-get update \
 && DEBIAN_FRONTEND=noninteractive apt-get install -y \
   bind9=1:${BIND_VERSION}* bind9-host=1:${BIND_VERSION}* dnsutils \
   webmin=${WEBMIN_VERSION}* \
 && rm -rf /var/lib/apt/lists/*

COPY entrypoint.sh /sbin/entrypoint.sh

RUN chmod 755 /sbin/entrypoint.sh

EXPOSE 53/udp 53/tcp 10000/tcp

ENTRYPOINT ["/sbin/entrypoint.sh"]

CMD ["/usr/sbin/named"]' > Dockerfile
# 登录到自己的docker仓库
# 自己使用的是阿里云的镜像仓库，也可以使用dockerhub官方仓库
docker login --username=${user_name} registry.cn-hangzhou.aliyuncs.com
docker buildx build --platform linux/aarch64 -t registry.cn-hangzhou.aliyuncs.com/docker-image-lee/bind:aarch64 --no-cache --push .

# 如果是在Mac或Windows上执行构建的话，需要首先执行下述命令
docker buildx create --use