# using my forked excalidraw
docker run -it --rm --name excalidraw docker.io/alswl/excalidraw:v0.17.0-fork-b1

# open another terminal
docker ps # check running state

cd excalidraw.alswl.com
rm -rf public
mkdir public
cd public
docker cp excalidraw:/usr/share/nginx/html/ - > files.tgz # replace your container id
tar xzvf files.tgz
mv html/* .
rmdir html
rm files.tgz
cd ..

# check and save your work
git add .

cd public
python3 -m http.server

# open in another terminal
open 'http://127.0.0.1:8000/'