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page_title: Dockerizing an SSH service
page_description: Installing and running an SSHd service on Docker
page_keywords: docker, example, package installation, networking
# Dockerizing an SSH Daemon Service
The following `Dockerfile` sets up an SSHd service in a container that you
can use to connect to and inspect other container's volumes, or to get
quick access to a test container.
# sshd
#
# VERSION 0.0.1
FROM debian
MAINTAINER Thatcher R. Peskens "thatcher@dotcloud.com"
# make sure the package repository is up to date
RUN apt-get update
RUN apt-get install -y openssh-server
RUN mkdir /var/run/sshd
RUN echo 'root:screencast' |chpasswd
EXPOSE 22
CMD ["/usr/sbin/sshd", "-D"]
Build the image using:
$ sudo docker build --rm -t eg_sshd .
Then run it. You can then use `docker port` to find out what host port
the container's port 22 is mapped to:
$ sudo docker run -d -P --name test_sshd eg_sshd
$ sudo docker port test_sshd 22
0.0.0.0:49154
And now you can ssh to port `49154` on the Docker daemon's host IP
address (`ip address` or `ifconfig` can tell you that):
$ ssh root@192.168.1.2 -p 49154
# The password is ``screencast``.
$$
Finally, clean up after your test by stopping and removing the
container, and then removing the image.
$ sudo docker stop test_sshd
$ sudo docker rm test_sshd
$ sudo docker rmi eg_sshd