Fix devcontainer public port, startup command and preview open

.devcontainer/devcontainer.json

@@ -15,7 +15,7 @@
   "portsAttributes": {
     "5000": {
       "label": "ASP.NET API",
-      "visibility": "public"
+      "onAutoForward": "openPreview"
     },
     "27017": {
       "label": "MongoDB Atlas Local"
@@ -28,5 +28,9 @@
     "ASPNETCORE_ENVIRONMENT": "Development"
   },
   "postCreateCommand": "dotnet restore && bash /workspaces/mongodb-dotnet-example/.devcontainer/track.sh created || true",
-  "postStartCommand": "echo 'Startup seed runs when the API starts (StartupBehaviorSettings:SeedOnStartup=true by default).'; bash /workspaces/mongodb-dotnet-example/.devcontainer/track.sh started || true"
+  "postStartCommand": "echo 'Startup seed runs when the API starts (StartupBehaviorSettings:SeedOnStartup=true by default).'; bash /workspaces/mongodb-dotnet-example/.devcontainer/track.sh started || true",
+  "postAttachCommand": {
+    "api": "dotnet run --urls http://localhost:5000",
+    "portSetup": "sleep 5 && .devcontainer/portSetup.sh"
+  }
 }

.devcontainer/portSetup.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -e
+
+if [ -z "$CODESPACE_NAME" ]; then
+    echo "Not running in a codespace, exiting."
+    exit
+fi
+
+echo "Installing GH"
+
+(type -p wget >/dev/null || (sudo apt update && sudo apt install wget -y)) \
+&& sudo mkdir -p -m 755 /etc/apt/keyrings \
+&& out=$(mktemp) && wget -nv -O$out https://cli.github.com/packages/githubcli-archive-keyring.gpg \
+&& cat $out | sudo tee /etc/apt/keyrings/githubcli-archive-keyring.gpg > /dev/null \
+&& sudo chmod go+r /etc/apt/keyrings/githubcli-archive-keyring.gpg \
+&& sudo mkdir -p -m 755 /etc/apt/sources.list.d \
+&& echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
+&& sudo apt update \
+&& sudo apt install gh -y
+
+echo "Exposing ports"
+gh codespace ports visibility 5000:public 27017:public -c $CODESPACE_NAME

Program.cs

@@ -1,4 +1,5 @@
 using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
@@ -48,6 +49,7 @@
     gamesService.SeedIfEmpty(GameSeedData.DefaultGames);
 }
 
+app.MapGet("/", () => Results.Redirect("/swagger"));
 app.MapControllers();
 app.MapHealthChecks("/health");