本文基于HD-RK3568-IOT评估板演示Debian系统安装Docker，该方法适用于RK356X全系产品。

HD-RK3568-IOT评估板基于HD-RK3568-CORE 工业级核心板设计（双网口、双CAN、5路串口），接口丰富，适用于工业现场应用需求，亦方便用户评估核心板及CPU 的性能。适用于工业自动化控制、人机界面、中小型医疗分析器、电力等多种行业应用。

1. 检测内核配置

使用 Docker 需要内核支持 CGROUP、BRIDGE 等功能，如果内核中未开启相关配置，安装或运行 Docker 会出现各种错误。Docker开源团队提供了一个脚本https://github.com/moby/moby/blob/master/contrib/check-config.sh，用以检测内核配置是否符合Docker运行的要求。

下载脚本到源码内核目录下。输入如下命令：

chmod 777 check-config.sh

./check-config.sh .config

|注：.config需要在内核配置完后才会生成

check-config.sh使用方法如下:

# ./check_config.sh ./kernel/.config

info: reading kernel config from ./kernel/.config ...

Generally Necessary:

- cgroup hierarchy: properly mounted [/sys/fs/cgroup]

- apparmor: enabled and tools installed

- CONFIG_NAMESPACES: enabled

- CONFIG_NET_NS: enabled

- CONFIG_PID_NS: enabled

- CONFIG_IPC_NS: enabled

- CONFIG_UTS_NS: enabled

- CONFIG_CGROUPS: enabled

- CONFIG_CGROUP_CPUACCT: enabled

- CONFIG_CGROUP_DEVICE: enabled

- CONFIG_CGROUP_FREEZER: enabled

- CONFIG_CGROUP_SCHED: enabled

- CONFIG_CPUSETS: enabled

- CONFIG_MEMCG: missing

- CONFIG_KEYS: enabled

- CONFIG_VETH: missing

- CONFIG_BRIDGE: missing

- CONFIG_BRIDGE_NETFILTER: missing

- CONFIG_IP_NF_FILTER: missing

- CONFIG_IP_NF_TARGET_MASQUERADE: missing

- CONFIG_NETFILTER_XT_MATCH_ADDRTYPE: missing

- CONFIG_NETFILTER_XT_MATCH_CONNTRACK: missing

- CONFIG_NETFILTER_XT_MATCH_IPVS: missing

- CONFIG_IP_NF_NAT: missing

- CONFIG_NF_NAT: missing

- CONFIG_POSIX_MQUEUE: missing

Optional Features:

- CONFIG_USER_NS: enabled

- CONFIG_SECCOMP: enabled

- CONFIG_SECCOMP_FILTER: enabled

- CONFIG_CGROUP_PIDS: missing

- CONFIG_MEMCG_SWAP: missing

- CONFIG_MEMCG_SWAP_ENABLED: missing

- CONFIG_BLK_CGROUP: missing

- CONFIG_BLK_DEV_THROTTLING: missing

- CONFIG_CGROUP_PERF: missing

- CONFIG_CGROUP_HUGETLB: missing

- CONFIG_NET_CLS_CGROUP: missing

- CONFIG_CGROUP_NET_PRIO: missing

- CONFIG_CFS_BANDWIDTH: enabled

- CONFIG_FAIR_GROUP_SCHED: enabled

- CONFIG_RT_GROUP_SCHED: missing

- CONFIG_IP_NF_TARGET_REDIRECT: missing

- CONFIG_IP_VS: missing

- CONFIG_IP_VS_NFCT: missing

- CONFIG_IP_VS_PROTO_TCP: missing

- CONFIG_IP_VS_PROTO_UDP: missing

- CONFIG_IP_VS_RR: missing

- CONFIG_SECURITY_SELINUX: missing

- CONFIG_SECURITY_APPARMOR: missing

2. 安装docker

执行以下命令安装Docker：

update-alternatives --set iptables /usr/sbin/iptables-legacy

update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy

curl -fsSL https://get.docker.com -o get-docker.sh

sudo sh get-docker.sh

echo "{"registry-mirrors":["https://reg-mirror.qiniu.com/"]}" > /etc/docker/daemon.json

sudo systemctl daemon-reload

sudo systemctl restart docker

3. 配置国内镜像加速

修改配置文件/etc/docker/daemon.json，配置完后重启系统。

{"registry-mirrors": [

"https://ung2thfc.mirror.aliyuncs.com",

"https://registry.docker-cn.com",

"http://hub-mirror.c.163.com",

"https://docker.mirrors.ustc.edu.cn"]}

4. 验证测试

root@hd-rk3568:~ $ docker run hello-world

若打印信息提示“Hello from Decoker ！”则说明已经安装成功，验证通过，

5. Docker常用操作