Merge pull request #42 from jarrodcolburn/patch-1

feat: cache CLI install

Author: samruddhikhandale

.devcontainer.json

@@ -21,5 +21,5 @@
         "ghcr.io/devcontainers/features/docker-in-docker:2": {}
     },
     "remoteUser": "node",
-    "postCreateCommand": "npm install -g @devcontainers/cli"
-}
+    "updateContentCommand": "npm install -g @devcontainers/cli"
+}