Update devcontainer.json

Author: rulasg

.devcontainer/devcontainer.json

@@ -5,7 +5,8 @@
   },
   "features": {
     "ghcr.io/devcontainers/features/node:1": {},
-    "ghcr.io/devcontainers/features/sshd:1": {}
+    "ghcr.io/devcontainers/features/sshd:1": {},
+    "ghcr.io/devcontainers/features/powershell:1": {}
   },
   "postCreateCommand": "bash ./.devcontainer/postCreateCommand.sh"
 }