# Install code-server
export VERSION=`curl -s https://api.github.com/repos/cdr/code-server/releases/latest | grep -oP '"tag_name": "\K(.*)(?=")'`
wget https://github.com/cdr/code-server/releases/download/$VERSION/code-server-$VERSION-linux-x86_64.tar.gz
tar -xvzf code-server-$VERSION-linux-x86_64.tar.gz
cd code-server-$VERSION-linux-x86_64
# Start the server
./code-server --auth none --port 8080
# Click on Web Preview -> Preview on port 8080
If you get a 404, remove ?authuser=0 from the url. So for example, just
https://8080-dot-YOURID-dot-devshell.appspot.com/
instead of
https://8080-dot-YOURID-dot-devshell.appspot.com/?authuser=0