Using SSH keys inside docker container

Question

I have an app that executes various fun stuff with Git (like running git clone & git push) and I'm trying to docker-ize it.

I’m having an issue where I need to be able to add an SHH key for the container for the container “user” to be used.

I tried copying it into /root/.ssh/, changing $HOME, creating a git ssh wrapper, and still no luck.

Here is the Dockerfile for reference:

#DOCKER-VERSION 0.3.4                                                           

from  ubuntu:12.04                                                              

RUN  apt-get update                                                             

RUN  apt-get install python-software-properties python g++ make git-core openssh-server -y

RUN  add-apt-repository ppa:chris-lea/node.js                                   

RUN  echo "deb http://archive.ubuntu.com/ubuntu precise universe" >> /etc/apt/sources.list

RUN  apt-get update                                                             

RUN  apt-get install nodejs -y                                                  

ADD . /src                                                                       

ADD ../../home/ubuntu/.ssh/id_rsa /root/.ssh/id_rsa                             

RUN   cd /src; npm install                                                       

EXPOSE  808:808                                                                 

CMD   [ "node", "/src/app.js"]

Answer 1

Turns out when using Ubuntu, the ssh_config isn't correct. You need to add

RUN  echo "IdentityFile ~/.ssh/id_rsa" >> /etc/ssh/ssh_config

to your Dockerfile in order to get it to recognize your ssh key.