Refactor container Run to Build

[aaronc]

Currently container.Run takes a function with inputs but those inputs are usually used to set variables elsewhere, ex:

	var appBuilder *runtime.AppBuilder
        var cdc codec.Codec
	err := container.Run(func(b *runtime.AppBuilder, c codec.Codec) {
		appBuilder = b
                codec = c
	}, appConfig)
	if err != nil {
		return Config{}, err
	}

We shouldn't be running any code inside the container function anyway because that just makes error traces more confusing. A more correct and useful pattern would be:

       var appBuilder *runtime.AppBuilder
        var cdc codec.Codec
	err := container.Build(appConfig, &appBuilder, &codec)
	if err != nil {
		return Config{}, err
	}