update docker files and docs

.devcontainer/Dockerfile

@@ -2,8 +2,7 @@ FROM pytorch/pytorch:2.2.0-cuda12.1-cudnn8-devel
 
 RUN <<EOF
 apt-get update
-apt-get install -y --no-install-recommends \
-    git
+apt-get install -y --no-install-recommends git
 rm -rf /var/lib/apt/lists/*
 EOF
 

.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"
       ]
     }
   }
-}
+}