Update 4 files

- /App01/Dockerfile
- /App01/ Properties/launchSettings.json
- /App01/App01csproj
- /App01/Program.cs

App01/ Properties/launchSettings.json

@@ -0,0 +1,13 @@
+{
+    "profiles": {
+      "HelloWorldApp": {
+        "commandName": "Project",
+        "dotnetRunMessages": true,
+        "launchBrowser": true,
+        "applicationUrl": "http://localhost:5000",
+        "environmentVariables": {
+          "ASPNETCORE_ENVIRONMENT": "Development"
+        }
+      }
+    }
+  }

App01/App01csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

App01/Program.cs

@@ -0,0 +1,6 @@
+var builder = WebApplication.CreateBuilder(args);
+var app = builder.Build();
+
+app.MapGet("/", () => "APP01 .NETv7 in Docker!");
+
+app.Run();