Docker

$ docker build -t pmndrs-docs .

$ cd ~/code/pmndrs/react-three-fiber
$ (
  trap 'kill -9 0' SIGINT

  export _PORT=60141

  export MDX=./docs
  export NEXT_PUBLIC_LIBNAME="React Three Fiber"
  export NEXT_PUBLIC_LIBNAME_SHORT="r3f"
  export BASE_PATH=
  export OUTPUT=export
  export HOME_REDIRECT=/getting-started/introduction
  export MDX_BASEURL=http://localhost:$_PORT
  export EDIT_BASEURL=
  export NEXT_PUBLIC_URL=
  export ICON=🇨🇭
  export LOGO=/logo.png

  rm -rf "$MDX/out"

  docker run --rm --init -it \
    -v "$MDX":/app/docs \
    -e MDX \
    -e NEXT_PUBLIC_LIBNAME \
    -e BASE_PATH \
    -e DIST_DIR="$MDX/out$BASE_PATH" \
    -e OUTPUT \
    -e HOME_REDIRECT \
    -e MDX_BASEURL \
    -e EDIT_BASEURL \
    -e NEXT_PUBLIC_URL \
    -e ICON \
    -e LOGO \
    pmndrs-docs npm run build

  kill $(lsof -ti:"$_PORT")
  npx serve $MDX -p $_PORT --no-port-switching --no-clipboard &
  npx -y serve "$MDX/out" &

  wait
)

Then go to: http://localhost:3000