docker system helper / podman-mac-helper installation should be setup by default on macOS

[benoitf]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind feature

Description

Today, if I install podman and start a podman machine
I can read in the output that the Docker socket is not added as I need to setup an extra tool.

something like

The system helper service is not installed; the default Docker API socket
address can't be used by podman. If you would like to install it run the
following commands:

        sudo /opt/podman/bin/podman-mac-helper install
        podman machine stop; podman machine start

But as the pkg installer is performing installation steps as root, I think that it should also install the mac helper
so we don't need a post-install step.

On Windows the docker socket is automatically bound, while on macOS it requires this extra step.

Steps to reproduce the issue:

1. Run brew or pkg installation of podman

Describe the results you received:

need to run install as root on podman-mac-helper

Describe the results you expected:

podman-mac-helper installation already done

Additional information you deem important (e.g. issue happens only occasionally):

Output of podman version:

(paste your output here)

Output of podman info:

(paste your output here)

Package info (e.g. output of rpm -q podman or apt list podman or brew info podman):

(paste your output here)

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide? (https://github.com/containers/podman/blob/main/troubleshooting.md)

Yes/No

Additional environment details (AWS, VirtualBox, physical, etc.):

[rhatdan]

@gbraad Can this be done within the installer, where if you don't have root passwd, it will still install, or if not, could you set it up such that a user could cancel the attempt to install the docker system helper but still successfully install.

[gbraad]

^^^ @anjannath WDYT?

[anjannath]

Installer always runs with root privileges, we can easily run this command in the `postinstall` script. edit: opened #16565

[n1hility]

Brew based installs of podman can't do this by default, package installation is purposefully not ran as root, and packages are supposed to indicate root actions as a separate step. So the best we could do is after a brew install is complete, print directions, but these may be ignored.

I agree we should fix the mac installer case, but in the brew case, I think the only solution is if podman-desktop checks and activates it (or tells the user to)