连接到Docker的运行容器

Question

I downloaded centos/centos7.1.1503 from docker's official hub, and created my custom dockerfile as below.

FROM centos:centos7.1.1503
RUN yum install -y passwd
RUN echo -e “root\nroot” | (passwd --stdin root)
RUN yum update -y
RUN yum install -y git-core build-essential libssl-dev
CMD /var/tmp | git clone git://git.openwrt.org/14.07/openwrt.git

I then ran the following 3 commands

docker build -t centos:test
docker run centos:test
docker attach <containerid>

It asks me for a password. The password i set in the docker file doesn't work at all. Any idea?

Answer 1

An idea is to change this line

RUN echo -e “root\nroot” | (passwd --stdin root)

to this one:

RUN echo root | passwd root --stdin

Otherwise you are trying to set root\\nroot as your root password (including that strange newline).

An other try would be this (if you have xargs available):

RUN echo root | xargs passwd root