docker 构建alpine基础镜像安装ssh服务

1. 创建Dockerfile

mkdir alpine
cd alpine
touch Dockerfile键入以下内容

#指定基础镜像
From alpine
#维护信息
MAINTAINER fangkai 2045907353@qq.com
## 替换源
# 替换阿里云的源
RUN echo "http://mirrors.aliyun.com/alpine/latest-stable/main/" > /etc/apk/repositories
RUN echo "http://mirrors.aliyun.com/alpine/latest-stable/community/" >> /etc/apk/repositories


##
RUN apk update && \
    apk add --no-cache openssh-server tzdata && \
    cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
    sed -i "s/#PermitRootLogin.*/PermitRootLogin yes/g" /etc/ssh/sshd_config && \
    ssh-keygen -t rsa -P "" -f /etc/ssh/ssh_host_rsa_key && \
    ssh-keygen -t ecdsa -P "" -f /etc/ssh/ssh_host_ecdsa_key && \
    ssh-keygen -t ed25519 -P "" -f /etc/ssh/ssh_host_ed25519_key && \
    echo "root:admin" | chpasswd
#开放端口
EXPOSE 22
## 启动后台运行
CMD ["/usr/sbin/sshd", "-D"]

构建镜像

docker build -t alpine_ssh ./

运行容器

docker run -d -p 8022:22 alpine_ssh

报错解决方案：

failed to do request: Head "https://registry-1.docker.io/v2/library/alpine/manifests/latest": EOF
docker 拉取远程镜像错误，更换源

linux 系统下
修改/etc/docker/daemon.json文件（如果文件不存在可以创建）输入

{
    "registry-mirrors":[
                        "https://hub-mirror.c.163.com/",
                        "https://docker.mirrors.ustc.edu.cn/"
                        ]
}

然后保存重启daemon