Docker中的Docker：docker守护程序无法启动（无法连接到containerd）

Question

我正在尝试在基于ubuntu：14.04的docker容器中安装docker。 当我用docker daemon启动守护进程时出现错误：

  

FATA [0000]无法连接到containerd。请确保您的PATH中已安装containerd，或者您已指定正确的地址。收到错误：写/ proc / 43 / oom_score_adj：权限被拒绝

我该如何解决这个问题？这里是我用来设置图像的dockerfile：

FROM ubuntu:14.04

RUN apt-get update && apt-get install -y apt-transport-https ca-certificates

# Adds the new GPG key
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D

# add entry
RUN echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" >> /etc/apt/sources.list.d/docker.list

# update and purge the old repo if it exists
RUN apt-get update && apt-get purge lxc-docker

# Verify that APT is pulling from the right repository
RUN apt-cache policy docker-engine

# Install the recommended packages
RUN apt-get update && apt-get install -y linux-image-extra-virtual

# install docker
RUN apt-get install -y docker-engine