How to make a docker image of ssh mutual trust

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DockerfileFROM ubuntu:16.04# packageRUN apt-get update Apt-get-y install sshCOPY ssh_config / etc/ssh/ssh_config# sshRUN sed-I 's/UsePAM yes/UsePAM no/g' / etc/ssh/sshd_config & & sed-I' s/PermitRootLogin without-password/PermitRootLogin yes/g' / etc/ssh/sshd_configRUN echo "root:root" | chpasswdRUN echo "root ALL= (ALL) ALL" > / etc/sudoersRUN ssh-keygen-t rsa-f ~ / .ssh/id_rsa-P''& & \ cat ~ / .ssh/id_rsa.pub > > ~ / .ssh/authorized_keysRUN mkdir / var/run/sshdEXPOSE 22CMD ["sh" "- c", "service ssh start & & bash"] generate image docker build-t sshimage. / verify ssh mutual trust

Start the first docker container, then enter the bash and execute hostname-I to get the ip.

# docker run-- rm-it sshimageroot@cbdf1f5e7e0f:/# hostname-i172.17.0.4

Start another container and execute ssh $ip.

# docker run-- rm-it sshimage * Starting OpenBSD Secure Shell server sshd [OK] root@ecaa455762df:/# ssh 172.17.0.4Warning: Permanently added '172.17.0.4' (ECDSA) to the list of known hosts.root@cbdf1f5e7e0f:~# hostname-i172.17.0.4

As you can see, ssh is a success.

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