how to use factory and strategy pattern with structure map

plugin.cs

// plugin definitions
interface IPlugin
{
	string ClientID;
	void SomeClientSpecificFunction();
}

class DefaultPlugin : IPlugin
{
	IDefaultPlugin()
	{
		ClientID = "";
	}
	void SomeClientSpecificFunction()
	{
		
	}
}

class ConcretePlugin : IPlugin
{
	ConcretePlugin()
	{
		ClientID = "ACME";
	}
	void SomeClientSpecificFunction()
	{
		// client specific code
	}
}

// factory definitions
interface IPluginFactory
{
	IPlugin GetPlugin(string clientId);
}

public class PluginFactory : IPluginFactory

	private IEnumerable<IPlugin> plugins;
	
	ctor(IEnumerable<IPlugin> plugins)
	{
		this.plugins = plugins;
	}
	
	public IPlugin GetPlugin(string clientId)
	{
		var result = 
			this.plugins.where(p => p.ClientId == clientId);
			
		if (result == null)
			return new DefaultPlugin();
	}
}

// dependent code
public class TestHarness 
{
	IPluginFactory pluginFactory;
	
	public TestHarness(IPluginFactory pluginFactory)
	{
		this.pluginFactory = pluginFactory;
	}
	
	public void Execute(string client = "")
	{
		var plugin = PluginFactory.GetPlugin(client);
		plugin.SomeClientSpecificFunction();
	}

}


Scan(s => 
{ 
	s.TheCallingAssembly();
	s.AddAllTypesOf<IPlugin>();
	s.AddAllTypesOf<IPluginFactory>();
}