BuildServiceBuilder

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using AzureNative = Pulumi.AzureNative;
return await Deployment.RunAsync(() =>
{
    var buildServiceBuilder = new AzureNative.AppPlatform.BuildServiceBuilder("buildServiceBuilder", new()
    {
        BuildServiceName = "default",
        BuilderName = "mybuilder",
        Properties = new AzureNative.AppPlatform.Inputs.BuilderPropertiesArgs
        {
            BuildpackGroups = new[]
            {
                new AzureNative.AppPlatform.Inputs.BuildpacksGroupPropertiesArgs
                {
                    Buildpacks = new[]
                    {
                        new AzureNative.AppPlatform.Inputs.BuildpackPropertiesArgs
                        {
                            Id = "tanzu-buildpacks/java-azure",
                        },
                    },
                    Name = "mix",
                },
            },
            Stack = new AzureNative.AppPlatform.Inputs.StackPropertiesArgs
            {
                Id = "io.buildpacks.stacks.bionic",
                Version = "base",
            },
        },
        ResourceGroupName = "myResourceGroup",
        ServiceName = "myservice",
    });
});

package generated_program;
import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.azurenative.appplatform.BuildServiceBuilder;
import com.pulumi.azurenative.appplatform.BuildServiceBuilderArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }
    public static void stack(Context ctx) {
        var buildServiceBuilder = new BuildServiceBuilder("buildServiceBuilder", BuildServiceBuilderArgs.builder()
            .buildServiceName("default")
            .builderName("mybuilder")
            .properties(Map.ofEntries(
                Map.entry("buildpackGroups", Map.ofEntries(
                    Map.entry("buildpacks", Map.of("id", "tanzu-buildpacks/java-azure")),
                    Map.entry("name", "mix")
                )),
                Map.entry("stack", Map.ofEntries(
                    Map.entry("id", "io.buildpacks.stacks.bionic"),
                    Map.entry("version", "base")
                ))
            ))
            .resourceGroupName("myResourceGroup")
            .serviceName("myservice")
            .build());
    }
}

$ pulumi import azure-native:appplatform:BuildServiceBuilder mybuilder /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/myResourceGroup/providers/Microsoft.AppPlatform/Spring/myservice/buildServices/default/builders/mybuilder