Continuous Delivery with Docker and Jenkins

Pushing the image

In order to push the created image, we need to tag it according to the naming convention:

<registry_address>/<image_name>:<tag>

The "registry_address" can be:

• User name in case of Docker Hub
• Domain name or IP address with port for a private registry (for example, localhost:5000)

In most cases, <tag> is in the form of image/application version.

Let's tag the image to use Docker Hub:

$ docker tag ubuntu_with_python leszko/ubuntu_with_python:1

We could have also tagged the image in the build command: "docker build -t leszko/ubuntu_with_python:1 . ".

If the repository has access restriction configured, we need to authorize it first:

$ docker login --username <username> --password <password>

It's possible to use the docker ...