diff --git a/content/post/docker.md b/content/post/docker.md
index 5985aa6..9067cd2 100644
--- a/content/post/docker.md
+++ b/content/post/docker.md
@@ -40,7 +40,8 @@ categories: ["container"]
     systemctl start docker
     ```
 
-### 常用的 linux with systemd 安装 docker
+### Linux with systemd 安装 docker
+- 下面是在运行 Rocky linux 8.4 的 X86 服务器上的操作过程
 - 下载 docker 二进制文件
     ```bsah
     curl -LO https://download.docker.com/linux/static/stable/x86_64/docker-20.10.10.tgz
@@ -193,6 +194,125 @@ categories: ["container"]
     systemctl start docker
     ```
 
+### Linux with openrc 安装 docker
+- 下面是在运行 Alpine Linux 3.14.2 的树莓派 4B 上的操作过程
+- 下载 docker 二进制文件
+    ```bsah
+    curl -LO https://download.docker.com/linux/static/stable/aarch64/docker-20.10.10.tgz
+    ```
+
+- 安装
+    ```bash
+    tar zxf docker-20.10.10.tgz
+    mv docker/* /usr/bin/
+    rm -rf docker/ docker-20.10.10.tgz
+    groupadd -g 10110 docker
+    ```
+
+- 创建 containerd 启动脚本 /etc/init.d/containerd
+    ```bash
+    #!/sbin/openrc-run
+    supervisor=supervise-daemon
+
+    name="Container Daemon"
+    description="Standalone containerd (usually started by Docker)"
+
+    extra_started_commands="reload"
+    description_reload="Reload configuration without exiting"
+
+    command="${containerd_command:-/usr/bin/containerd}"
+    command_args="${containerd_opts}"
+    rc_ulimit="${ulimit_opts:--c unlimited -n 1048576 -u unlimited}"
+    retry="${signal_retry:-TERM/60/KILL/10}"
+
+    log_file="${log_file:-/var/log/${RC_SVCNAME}.log}"
+    err_file="${err_file:-${log_file}}"
+    log_mode="${log_mode:-0644}"
+    log_owner="${log_owner:-root:root}"
+
+    supervise_daemon_args="${supervise_daemon_opts:---stderr \"${err_file}\" --stdout \"${log_file}\"}"
+
+    depend() {
+            need sysfs cgroups
+    }
+
+    start_pre() {
+            checkpath -f -m "$log_mode" -o "$log_owner" "$log_file" "$err_file"
+    }
+
+    reload() {
+            ebegin "Reloading configuration"
+            $supervisor $RC_SVCNAME --signal HUP
+            eend $?
+    }
+    ```
+
+- 创建 docker 启动脚本 /etc/init.d/docker
+    ```bash
+    #!/sbin/openrc-run
+    supervisor=supervise-daemon
+
+    name="Docker Daemon"
+    description="Persistent process that manages docker containers"
+    description_reload="Reload configuration without exiting"
+
+    command="${DOCKERD_BINARY:-/usr/bin/dockerd}"
+    command_args="${DOCKER_OPTS}"
+    DOCKER_LOGFILE="${DOCKER_LOGFILE:-/var/log/${RC_SVCNAME}.log}"
+    DOCKER_ERRFILE="${DOCKER_ERRFILE:-${DOCKER_LOGFILE}}"
+    DOCKER_OUTFILE="${DOCKER_OUTFILE:-${DOCKER_LOGFILE}}"
+    supervise_daemon_args="--stderr \"${DOCKER_ERRFILE}\" --stdout \"${DOCKER_OUTFILE}\""
+
+    extra_started_commands="reload"
+
+    rc_ulimit="${DOCKER_ULIMIT:--c unlimited -n 1048576 -u unlimited}"
+
+    retry="${DOCKER_RETRY:-TERM/60/KILL/10}"
+
+    depend() {
+            need sysfs cgroups
+            after iptables ip6tables
+    }
+
+    start_pre() {
+            checkpath -f -m 0644 -o root:docker "$DOCKER_ERRFILE" "$DOCKER_OUTFILE"
+    }
+
+    reload() {
+            ebegin "Reloading configuration"
+            $supervisor $RC_SVCNAME --signal HUP
+            eend $?
+    }
+    ```
+
+- 启动脚本增加可执行权限
+    ```bash
+    chmod 0755 /etc/init.d/{containerd,docker}
+    ```
+
+- 修改 docker 配置文件，建议选择一个与本地网络不冲突的网段
+    ```bash
+    mkdir -p /etc/docker
+    cat > /etc/docker/daemon.json <<-EOF
+    {
+      "insecure-registries": ["harbor.colben.cn"],
+      "default-address-pools" : [{"base":"10.110.0.0/16", "size": 24}],
+      "log-driver": "json-file",
+      "log-opts": {"max-size":"100m", "max-file":"4"}
+    }
+    EOF
+    ```
+
+- 启动 docker
+    ```bash
+    service docker start
+    ```
+
+- 设置 docker 开机自动启动
+    ```bash
+    rc-update add docker
+    ```
+
 ## 安装 docker-compose
 - 下载 docker-compose
     ```bash