add version 0.0.1

.devcontainer/devcontainer.json

@@ -3,7 +3,19 @@
 {
 	"name": "C# (.NET)",
 	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
-	"image": "mcr.microsoft.com/devcontainers/dotnet:0-6.0"
+	"image": "mcr.microsoft.com/devcontainers/dotnet:0-6.0",
+	"features": {
+		"ghcr.io/devcontainers/features/nix:1": {}
+	},
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"formulahendry.dotnet-test-explorer",
+				"jnoortheen.nix-ide",
+				"eamodio.gitlens"
+			]
+		}
+	},
 
 	// Features to add to the dev container. More info: https://containers.dev/features.
 	// "features": {},
@@ -17,10 +29,7 @@
 	// }
 
 	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "dotnet restore",
-
-	// Configure tool-specific properties.
-	// "customizations": {},
+	"postCreateCommand": "nix-env -i nixpkgs-fmt"
 
 	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
 	// "remoteUser": "root"