update docker files and docs

.devcontainer/devcontainer.json

@@ -9,11 +9,10 @@
     "vscode": {
       "extensions": [
         "ms-python.python",
-        "ms-python.black-formatter",
         "ms-azuretools.vscode-docker",
         "ms-toolsai.jupyter",
         "esbenp.prettier-vscode"
       ]
     }
   }
-}
+}