fixed the powershell issue (#107)

Author: Prekshith-Microsoft

.devcontainer/Dockerfile

@@ -0,0 +1,4 @@
+FROM mcr.microsoft.com/devcontainers/python:3.10-bullseye
+
+# Remove Yarn repository to avoid GPG key expiration issue
+RUN rm -f /etc/apt/sources.list.d/yarn.list

.devcontainer/devcontainer.json

@@ -1,11 +1,14 @@
 
   {
     "name": "Azure Developer CLI",
-    "image": "mcr.microsoft.com/devcontainers/python:3.10-bullseye",
+    "build": {
+        "dockerfile": "Dockerfile"
+    },
     "features": {
         // See https://containers.dev/features for list of features
         "ghcr.io/devcontainers/features/docker-in-docker:2": {},
         "ghcr.io/azure/azure-dev/azd:latest": {},
-        "ghcr.io/devcontainers/features/azure-cli:1": {}
+        "ghcr.io/devcontainers/features/azure-cli:1": {},
+        "ghcr.io/devcontainers/features/powershell:2.0.0": {}
     }
 }