Dockerized SSH service, built on top of official Ubuntu images.

• rastasheep/ubuntu-sshd:12.04 (precise)
• rastasheep/ubuntu-sshd:12.10 (quantal)
• rastasheep/ubuntu-sshd:13.04 (raring)
• rastasheep/ubuntu-sshd:13.10 (saucy)
• rastasheep/ubuntu-sshd:14.04 (trusty)
• rastasheep/ubuntu-sshd:16.04 (xenial)
• rastasheep/ubuntu-sshd:18.04 (bionic)

Base:

• Precise (12.04) minimal
• Quantal (12.10) minimal
• Raring (13.04) minimal
• Saucy (13.10) minimal
• Trusty (14.04) minimal
• Xenial (16.04) minimal
• Bionic (18.04) minimal

Image specific:

• openssh-server

Config:

• PermitRootLogin yes
• UsePAM no
• exposed port 22
• default command: /usr/sbin/sshd -D
• root password: root

$ sudo docker run -d -P --name test_sshd rastasheep/ubuntu-sshd:14.04
$ sudo docker port test_sshd 22
  0.0.0.0:49154

$ ssh root@localhost -p 49154
# The password is `root`
root@test_sshd $

If you are making the container accessible from the internet you'll probably want to secure it bit. You can do one of the following two things after launching the container:

• Change the root password: docker exec -ti test_sshd passwd
• Don't allow passwords at all, use keys instead:

$ docker exec test_sshd passwd -d root
$ docker cp file_on_host_with_allowed_public_keys test_sshd:/root/.ssh/authorized_keys
$ docker exec test_sshd chown root:root /root/.ssh/authorized_keys

If you run into any problems with this image, please check (and potentially file new) issues on the rastasheep/ubuntu-sshd repo, which is the source for this image.