This takes the quay.io/podman/stable image and extends it with some enhancements to make it more docker like and able to use docker as a command as well as includes docker-compose.

Notes on Github Actions

This job runs on a self-hosted Github Actions agent and publishes to Github's container registry ghcr.io as a 'public' image and can be downloaded via a simple docker command or other means as you see fit.

docker pull ghcr.io/jamesjonesconsulting/podman-dind-like:latest

Notes on GitLab

This job also runs on a self-hosted gitlab agent with the following in the /etc/gitlab-runner/config.toml file so this is also compatible with other self-hosted agents for other CI/CD self-hosted agents.

  [runners.docker]
    host = "unix:///run/podman/podman.sock"
    tls_verify = false
    image = "quay.io/podman/stable"
    privileged = true
    network_mode = "host"

Setting up Podman socket on build machines for use with muliple flavors of CI/CD agents

First, install podman.socket

sudo dnf install -y podman.socket; sudo systemctl enable --now podman.socket

Create an systemd overlay to use the docker group on the socket file (note: you'll have to create this group yourself separately).

aka: Create a file as /etc/systemd/system/podman.socket.d/overlay.conf containing:

[Socket]
SocketMode=0660
SocketUser=root
SocketGroup=docker

Created a tmpfiles.d entry as /etc/tmpfiles.d/podman.conf file containing (ensuring that folder will retain the correct permissions after reboots)

d /run/podman 0770 root docker

Note: This ensures that the group docker has permissions to use this socket.

Finally, add the agent users to the docker group (whichever agent you are using).

Run sudo systemctl reload-daemon and reboot (quickest way).