azd up fails with a go panic on a .NET Aspire using AddContainer

[shanselman]

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Output from azd version
Run azd version and copy and paste the output here:

azd version 1.5.0 (commit 012ae73)

Describe the bug

azd up will cause a go panic if you run it on an .NET aspire starter template after adding these lines to AppHost's program.cs:

builder.AddContainer("podcast", "podcast", "latest")
   .WithServiceBinding(hostPort: 8080, containerPort: 80, scheme: "http")
   .WithEnvironment("ASPNETCORE_ENVIRONMENT", "Development")
   .WithEnvironment("ASPNETCORE_URLS", "http://+:80");

It's perhaps that Aspire is generating something wrong, but either way, both sides (aspire generator and azd consumer) can be more defensive

Building...
info: Aspire.Hosting.Publishing.ManifestPublisher[0]
      Published manifest to: C:\Users\scottha\AppData\Local\Temp\azd-provision777714042\apphost-manifest.json
2023/12/05 14:47:41 hooks.go:156: service 'apiservice' does not require any command hooks.
2023/12/05 14:47:41 hooks.go:156: service 'webfrontend' does not require any command hooks.
2023/12/05 14:47:41 hooks.go:85: azd project is not available or does not contain any command hooks, skipping command hook registrations.
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0xa64ee1]

goroutine 1 [running]:
github.com/azure/azure-dev/cli/azd/pkg/apphost.(*infraGenerator).Compile(0xc0001ca7c0)
        github.com/azure/azure-dev/cli/azd/pkg/apphost/generate.go:409 +0x121
github.com/azure/azure-dev/cli/azd/pkg/apphost.BicepTemplate(0xc00059e190?)
        github.com/azure/azure-dev/cli/azd/pkg/apphost/generate.go:94 +0x17b
github.com/azure/azure-dev/cli/azd/pkg/project.(*DotNetImporter).ProjectInfrastructure(0xc00059e190?, {0x1251ec0?, 0xc00055bf50?}, 0xc00008fec0?)
        github.com/azure/azure-dev/cli/azd/pkg/project/dotnet_importer.go:97 +0x78
github.com/azure/azure-dev/cli/azd/pkg/project.(*ImportManager).ProjectInfrastructure(0xc00012c0e8, {0x1251ec0, 0xc00055bf50}, 0xc0000d1760)
        github.com/azure/azure-dev/cli/azd/pkg/project/importer.go:125 +0x447
github.com/azure/azure-dev/cli/azd/cmd.(*upAction).Run(0xc00014e1c0, {0x1251ec0, 0xc00055bf50})
        github.com/azure/azure-dev/cli/azd/cmd/up.go:117 +0x277
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction.func1({0x1251ec0?, 0xc00055bf50?})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:127 +0x2e8
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*HooksMiddleware).registerCommandHooks(0xc00059e1e0?, {0x1251ec0, 0xc00055bf50}, 0x410965?, 0xc000506c10?, 0xc00068a400)
        github.com/azure/azure-dev/cli/azd/cmd/middleware/hooks.go:88 +0x399
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*HooksMiddleware).Run(0xc00059e1e0, {0x1251ec0?, 0xc00055bec0?}, 0xc00068a400)
        github.com/azure/azure-dev/cli/azd/cmd/middleware/hooks.go:73 +0x1d8
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction.func1({0x1251ec0, 0xc00055bec0})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:125 +0x2a2
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*TelemetryMiddleware).Run(0xc000506ad0, {0x1251ec0, 0xc0003a96e0}, 0xc00068a400)
        github.com/azure/azure-dev/cli/azd/cmd/middleware/telemetry.go:85 +0x8b8
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction.func1({0x1251ec0, 0xc0003a96e0})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:125 +0x2a2
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*ExperimentationMiddleware).Run(0xc00003c450?, {0x1251ec0, 0xc0003a96e0}, 0xc00068a400)
        github.com/azure/azure-dev/cli/azd/cmd/middleware/experimentation.go:64 +0x4d6
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction.func1({0x1251ec0, 0xc0003a96e0})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:125 +0x2a2
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*DebugMiddleware).Run(0xc0005a4300, {0x1251ec0, 0xc0003a96e0}, 0xc00068a400)
        github.com/azure/azure-dev/cli/azd/cmd/middleware/debug.go:48 +0x311
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction.func1({0x1251ec0, 0xc0003a96e0})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:125 +0x2a2
github.com/azure/azure-dev/cli/azd/cmd/middleware.(*MiddlewareRunner).RunAction(0xc00045cc30, {0x1251ec0, 0xc0003a96e0}, 0xc00056da80?, {0x1246600?, 0xc00014e1c0})
        github.com/azure/azure-dev/cli/azd/cmd/middleware/middleware.go:131 +0x226
github.com/azure/azure-dev/cli/azd/cmd.(*CobraBuilder).configureActionResolver.func1(0xc000453400, {0xc00045f940?, 0x0, 0x1})
        github.com/azure/azure-dev/cli/azd/cmd/cobra_builder.go:142 +0x4cf
github.com/spf13/cobra.(*Command).execute(0xc000453400, {0xc00045f930, 0x1, 0x1})
        github.com/spf13/cobra@v1.3.0/command.go:856 +0x694
github.com/spf13/cobra.(*Command).ExecuteC(0xc0003d1680)
        github.com/spf13/cobra@v1.3.0/command.go:974 +0x38d
github.com/spf13/cobra.(*Command).Execute(...)
        github.com/spf13/cobra@v1.3.0/command.go:902
github.com/spf13/cobra.(*Command).ExecuteContext(0x1251e88?, {0x1251e88?, 0x198c080?})
        github.com/spf13/cobra@v1.3.0/command.go:895 +0x47
main.main()
        D:/a/_work/1/s/cli/azd/main.go:61 +0x1fe

To Reproduce

Make a .NET 8 Aspire Starter app, and add these lines to Program.cs. This app will build and run fine, but azd up won't run.

builder.AddContainer("podcast", "podcast", "latest")
   .WithServiceBinding(hostPort: 8080, containerPort: 80, scheme: "http")
   .WithEnvironment("ASPNETCORE_ENVIRONMENT", "Development")
   .WithEnvironment("ASPNETCORE_URLS", "http://+:80");

Expected behavior

I expect it at least try to deploy or throw a reasonable error.

Environment
Information on your environment:

• CLI only

@davidfowl

[weikanglim]

This is a duplicate of #3016 which will be fixed with Aspire preview 2.