git submodule init
git submodule update
./.devcontainer/vscode-extension-install.sh
参考: VNCでDockerコンテナ内のGUIデスクトップにアクセスしてみた
apt-get install locales-all
DEBIAN_FRONTEND=noninteractive apt install -y lxde
apt-get install tightvncserver
apt-get install -y novnc websockify
cp ~/.vnc/xstartup ~/.vnc/xstartup
export DISPLAY=:1
vncserver :1 -geometry 800x600 -depth 24
websockify -D --web=/usr/share/novnc/ 18001 localhost:5901