Bump .NET default to 6.0 now that it is GA, trigger image update (#1156)

Author: Chuxel

.github/workflows/smoke-dotnet.yaml

@@ -28,5 +28,5 @@ jobs:
       uses: ./.github/actions/smoke-test
       with:
         definition: dotnet
-        image: mcr.microsoft.com/vscode/devcontainers/dotnet:dev-5.0
+        image: mcr.microsoft.com/vscode/devcontainers/dotnet:dev-6.0
         user: vscode

containers/dotnet/.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # [Choice] .NET version: 6.0, 5.0, 3.1, 6.0-bullseye, 5.0-bullseye, 3.1-bullseye, 6.0-focal, 5.0-focal, 3.1-focal
-ARG VARIANT=5.0-bullseye
+ARG VARIANT=6.0-bullseye
 FROM mcr.microsoft.com/vscode/devcontainers/dotnet:0-${VARIANT}
 
 # [Choice] Node.js version: none, lts/*, 16, 14, 12, 10

containers/dotnet/.devcontainer/base.Dockerfile

@@ -1,5 +1,5 @@
 # [Choice] .NET version: 6.0-bullseye, 5.0-bullseye, 3.1-bullseye, 6.0-focal, 5.0-focal, 3.1-focal
-ARG VARIANT="5.0-bullseye"
+ARG VARIANT=6.0-bullseye-slim
 FROM mcr.microsoft.com/dotnet/sdk:${VARIANT}
 
 # Copy library scripts to execute

containers/dotnet/.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
 		"args": { 
 			// Update 'VARIANT' to pick a .NET Core version: 3.1, 5.0, 6.0
 			// Append -bullseye or -focal to pin to an OS version.
-			"VARIANT": "5.0",
+			"VARIANT": "6.0",
 			// Options
 			"NODE_VERSION": "lts/*"
 		}

containers/dotnet/definition-manifest.json

@@ -1,8 +1,8 @@
 {
 	"variants": ["6.0-bullseye-slim", "6.0-focal", "5.0-bullseye-slim", "5.0-focal", "3.1-bullseye", "3.1-focal"],
-	"definitionVersion": "0.201.12",
+	"definitionVersion": "0.202.0",
 	"build": {
-		"latest": "5.0-focal",
+		"latest": "6.0-bullseye-slim",
 		"rootDistro": "debian",
 		"tags": [
 			"dotnet:${VERSION}-${VARIANT}"