chore(docker): build image with ASP.NET Core support for Native AOT (…

…~28.7MB)

.envrc.ex → .envrc.sample

@@ -13,4 +13,3 @@
 # export ARM_TENANT_ID="<azure_subscription_tenant_id>"
 # export ARM_CLIENT_ID="<service_principal_appid>"
 # export ARM_CLIENT_SECRET="<service_principal_password>"
-

Dockerfile

@@ -1,18 +1,24 @@
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS build
+# https://mcr.microsoft.com/product/dotnet/sdk
+# https://mcr.microsoft.com/v2/dotnet/sdk/tags/list
+FROM --platform=$BUILDPLATFORM mcr.microsoft.com/dotnet/nightly/sdk:8.0-jammy-aot AS build
+ARG TARGETARCH
 WORKDIR /source
 
 COPY src/*.csproj .
-RUN dotnet restore
+RUN dotnet restore -r linux-$TARGETARCH
 
 COPY src/. .
 RUN dotnet publish --no-restore -c Release -o /app
 
-FROM mcr.microsoft.com/dotnet/aspnet:6.0 as final
+RUN dotnet publish -r linux-$TARGETARCH --no-restore -o /app
+RUN rm /app/*.dbg /app/*.Development.json
+
+FROM mcr.microsoft.com/dotnet/nightly/runtime-deps:8.0.6-noble-chiseled-aot as final
 WORKDIR /app
 COPY --from=build /app .
 
 ENV PORT 3000
 EXPOSE ${PORT}
 
-USER 1000
-ENTRYPOINT ["dotnet", "demo-dotnet.dll"]
+USER $APP_UID
+ENTRYPOINT ["./demo-dotnet"]

README.md

@@ -1,5 +1,5 @@
 # azure-aks-dotnet-api-demo
-This repository demonstrates how to deploy .Net 6.0 application on Azure Kubernetes(AKS) from scratch.
+This repository demonstrates how to deploy .Net 8.0 application on Azure Kubernetes(AKS) from scratch.
 
 ## Requirements
 * Azure account

src/Program.cs

@@ -1,19 +1,23 @@
-using Prometheus;
+using System.Text.Json.Serialization;
+
+//var builder = WebApplication.CreateBuilder(args);
+var builder = WebApplication.CreateSlimBuilder(args);
 
-var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddHealthChecks();
 builder.Services.AddLogging();
 
+builder.Services.ConfigureHttpJsonOptions(options =>
+{
+    options.SerializerOptions.TypeInfoResolverChain.Insert(0, AppJsonSerializerContext.Default);
+});
+
 var app = builder.Build();
+
 app.MapHealthChecks("/healthz");
-app.UseMetricServer();
-app.UseHttpLogging();
-app.UseRouting();
-app.UseHttpMetrics();
 
 app.MapGet("/", () =>
 {
-    var version = Environment.GetEnvironmentVariable("VERSION") ?? builder.Configuration["VERSION"];
+    var version = System.Environment.GetEnvironmentVariable("VERSION") ?? builder.Configuration["VERSION"];
     return new Metadata(System.Net.Dns.GetHostName(), version);
 }).WithName("GetMetadata");
 
@@ -28,5 +32,16 @@
 
 app.Run();
 
-record Metadata(string Hostname, string Version){}
-record User(string name){}
+
+public record Metadata(string Hostname, string Version);
+public record User(string Name);
+
+// https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/source-generation?pivots=dotnet-8-0
+
+[JsonSourceGenerationOptions(PropertyNamingPolicy = JsonKnownNamingPolicy.KebabCaseLower)]
+[JsonSerializable(typeof(Metadata))]
+[JsonSerializable(typeof(User[]))]
+[JsonSerializable(typeof(string))]
+internal partial class AppJsonSerializerContext : JsonSerializerContext
+{
+}

src/Properties/launchSettings.json

@@ -1,31 +1,15 @@
 {
-  "$schema": "https://json.schemastore.org/launchsettings.json",
-  "iisSettings": {
-    "windowsAuthentication": false,
-    "anonymousAuthentication": true,
-    "iisExpress": {
-      "applicationUrl": "http://localhost:33202",
-      "sslPort": 44359
-    }
-  },
-  "profiles": {
-    "user_demo_dotnet": {
-      "commandName": "Project",
-      "dotnetRunMessages": true,
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "applicationUrl": "https://localhost:7033;http://localhost:5073",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
-      }
-    },
-    "IIS Express": {
-      "commandName": "IISExpress",
-      "launchBrowser": true,
-      "launchUrl": "swagger",
-      "environmentVariables": {
-        "ASPNETCORE_ENVIRONMENT": "Development"
+    "$schema": "http://json.schemastore.org/launchsettings.json",
+    "profiles": {
+      "http": {
+        "commandName": "Project",
+        "dotnetRunMessages": true,
+        "launchBrowser": true,
+        "launchUrl": "releases",
+        "applicationUrl": "http://localhost:5132",
+        "environmentVariables": {
+          "ASPNETCORE_ENVIRONMENT": "Development"
+        }
       }
     }
   }
-}

src/README.md

@@ -0,0 +1 @@
+- Use [native AOT deployment](https://learn.microsoft.com/en-us/aspnet/core/fundamentals/native-aot?view=aspnetcore-8.0)

src/demo-dotnet.csproj

@@ -1,17 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
-  <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+ <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
-    <RootNamespace>demo_dotnet</RootNamespace>
+    <PublishAot>true</PublishAot>
+    <InvariantGlobalization>true</InvariantGlobalization>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Data.Sqlite" Version="6.0.31" />
-    <PackageReference Include="prometheus-net" Version="5.0.1" />
-    <PackageReference Include="prometheus-net.AspNetCore" Version="5.0.1" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
+    <PackageReference Include="Microsoft.Data.Sqlite" Version="8.0.6" />
   </ItemGroup>
-
 </Project>