update devcontainer (#27)

Author: f2calv

.devcontainer/devcontainer.json

@@ -15,6 +15,11 @@
 		"--security-opt",
 		"seccomp=unconfined"
 	],
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	"features": {
+		"ghcr.io/devcontainers/features/powershell:1": {},
+		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {}
+	},
 	// Configure tool-specific properties.
 	"customizations": {
 		// Configure properties specific to VS Code.
@@ -48,14 +53,5 @@
 	"postCreateCommand": "sh . ./.devcontainer/postCreateCommand.sh",
 	"postStartCommand": "sh . ./.devcontainer/postStartCommand.sh",
 	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
-	"remoteUser": "vscode",
-	"features": {
-		"docker-in-docker": "latest",
-		"kubectl-helm-minikube": {
-			"version": "latest",
-			"helm": "3.9.2",
-			"minikube": "none"
-		},
-		"powershell": "latest"
-	}
+	"remoteUser": "vscode"
 }