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Docker Push an Image to a Remote Server

 ·  1 min read

I needed to be able to push an image from my CI/CD server. Before I was using docker-hub to host my images and wanted to streamline the process. I would build my code >> build my image >> push to docker-hub >> have my server download the new image from docker-hub >> than update / restart container.

Now:

  1. CI/CD Build
  2. Push image to Remote Server
  3. Stop container / Restart

Things needed:

Docker
Python / PIP
SSH Key
docker-push-ssh (https://github.com/brthor/docker-push-ssh)

Assuming you have docker and python installed, and you have have setup ssh for key access.

Setup docker-push-ssh

<code>sudo -H pip install docker-push-ssh</code>

I followed the guide to add an insecure registry to docker for linux.

<code>// /etc/docker/daemon.json
{
"insecure-registries" : &#91; "localhost:5000" ]
}</code>
<code>sudo systemctl daemon-reload
sudo systemctl restart docker</code>

Build a test image

Dockerfile

<code># vi Dockerfile
FROM alpine
RUN touch /etc/testimage</code>
<code>docker build -t testimage .</code>

Push image to remote server

<code>docker-push-ssh -i ~/.ssh/id_rsa username@host_ip_or_name testimage</code>

Fin.

Useful Commands

<code># list images
docker images
# list all containers
docker ps -a
# force remove image
docker rmi -f image_id
# remove container
docker rm container_id</code>