Compatibility: Add filters for listing networks

[minioin]

I tried to run k3d with podman system service but k3d returned error with filters for listing networks is not implemented . As I looked at docker api, it lists filters as an option.

This features is one of the first thing I encountered while running k3d under podman .

[Luap99]

The problem is that podman handles networking differently from docker. The podman backend only supports name and plugin as valid filter keys for networks. I guess that's the reason why the api don't allow filters.

[minioin]

Considering that we already need a system service for docker compatibility, how is it difficult to maintain a list of networks to implement this feature? What is blocking this api exactly?

[Luap99]

@mheon stated that he is looking to improve this in the future #7080 (comment)

@minioin Do you know what filter k3d is using? I think we can at least implement the name filter for now.

[rhatdan]

@minioin Time is the only thing blocking us. Getting community to help build it is always helpful.

[iwilltry42]

@Luap99 , in k3d we're only filtering by name: https://github.com/rancher/k3d/blob/main/pkg/runtimes/docker/network.go#L47-L54

        // (1) configure list filters
	args := filters.NewArgs()
	args.Add("name", name)

	// (2) get filtered list of networks
	networkList, err := docker.NetworkList(ctx, types.NetworkListOptions{
		Filters: args,
	})

[rhatdan]

@iwilltry42 @minioin @Luap99 Can we close this issue now since your PR has been merged?

[mheon]

I'm going to go ahead and close this. We're not 100% there yet, but we can open separate, more specific issues for any remaining missing filters.