Podman Tutorial Part 2(Registries, Creating, Running, and Pushing Images)

In this tutorial, we will cover how to work with Podman registries, including creating, running, and pushing images to GitHub Container Registry. This step-by-step guide will help you understand how to interact with container registries, build custom images, and manage your container images in a secure and efficient way.

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1. Setting Up Podman Registries

1.1 Configure Podman to Use a Registry

Podman uses container registries to pull and push container images. By default, Podman will search in certain registries (like Docker Hub or Red Hat’s registry), but you can add your own registry to Podman’s configuration.

The configuration file is located at /etc/containers/registries.conf.

sudo nano /etc/containers/registries.conf

In this file, you can specify which registries Podman should search by default when pulling or pushing images.

For example, to add GitHub’s Container Registry, modify the [registries.search] section to look like this:

[registries.search]
registries = ['docker.io', 'quay.io', 'ghcr.io']

[registries.insecure]
registries = []

Save and exit the file.

1.2 List Available Registries