Podman is a daemon-less alternative to Docker, but with Rootless containers, grouping containers in pods, and systemd integration. What do you think of it? - eviltoast

Podman is a lot like Docker: a tool for running OCI containers. While it maintains backwards compatibility with Dockerfile and docker-compose syntax, it offers a lot of other benefits:

  • daemonless: it can run containers without a daemon process running in the background.
  • Rootless: can run containers without root privileges
  • pods: can group containers into secluded pods, which share resources and network namespace

Podman has other features I haven’t explored yet, like compatibility with Kubernetes yaml file, and being able to run containers as systemd units.

Have you used podman before? What are your thoughts on it?

  • agilob@programming.devEnglish
    1·
    1 year ago

    I have this on my to-do list, but sorry, can’t promise when I’ll make a working demo. afair the trick was to use something like “podman in-podman”, like dind works in GitLab runners and then some env-vars manipulation so TC thinks it runs in docker, something like

    DOCKER_HOST=unix:///run/user/1000/podman/podman.sock and I use alpine as gitlab-ci helper image:

            image = "docker.io/alpine:3.17.2"
        helper_image_flavor = "alpine"

    not sure if that matters, but i had lots of strange problems running with Ubuntu helper images, most were DNS propagation issues