#!/bin/bash
insert_if_absent() {
    line="${1}"
    lead="$(echo "${line}" | cut -f1 -d=)""="
    if  ! grep "^${lead}" /usr/lib/systemd/system/containerd.service  > /dev/null 2>&1; then
        sed -i "/^ExecStart=/a${line}" /usr/lib/systemd/system/containerd.service
    fi
}

insert_if_absent OOMScoreAdjust=-999
insert_if_absent RestartSec=5
insert_if_absent Restart=always

sed -i '/BindsTo/d' /usr/lib/systemd/system/dockerd.service
sed -i 's/^Wants.*/Wants\\=network-online.target containerd.service/' /usr/lib/systemd/system/dockerd.service

systemctl daemon-reload

pkill -9 containerd;systemctl is-active dockerd containerd