fixed dev container

.devcontainer/devcontainer.json

@@ -19,9 +19,7 @@
 
 	// Features to add to the dev container. More info: https://containers.dev/features.
 	"features": {
-		"ghcr.io/devcontainers/features/github-cli:1": {
-			"version": "latest"
-		}
+		"ghcr.io/devcontainers/features/github-cli:1": {}
 	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
@@ -36,7 +34,8 @@
 			// Add the IDs of extensions you want installed when the container is created.
 			"extensions": [
 				"ms-python.python",
-				"ms-toolsai.jupyter"
+				"ms-toolsai.jupyter",
+				"mhutchie.git-graph"
 			]
 		}
 	}