centos7 docker 安装教程

cat /etc/redhat-release

CentOS Linux release 7.4.1708 (Core)

确定centos7可以上外网
yum -y install gcc
yum -y install gcc-c++

安装完成之后,查看gcc版本
gcc -v

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC)

sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine

sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2

# 官方推荐
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
# 实际推荐
sudo yum yum-config-manager --add-repo http://mirrors.aliyun.com/cloer-re/linux/centos/docker-re.repo

yum makecache fast

# 官网
sudo yum -y install docker-ce docker-ce-cli containerd.io
# 尚硅谷
yum -y install docker-ce

sudo systemctl start docker

docker version
docer run hello-world

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json
# daemon.json中的内容
{
"registry-mirrors": ["https://eu2u8bif.mirror.aliyuncs.com"]
}
# 重新加载daemon.json
sudo systemctl daemon-reload
# 重启docker
sudo systemctl restart docker

# 停止docker
systemctl stop docker
# 移除docker
sudo yum -y remove docker-ce
# 移除所有容器/镜像/数据卷
sudo rm -rf /var/lib/docker