Can't parse path containing spaces

[zhanyuanucb]

Describe the bug
Got No such command: _ while running bash example/run_docker.sh

To Reproduce
Steps to reproduce the behavior:

1. Create a directory containing space (e.g. My Directory)
2. Clone the pirlib repo to this directory and cd to this repo
3. run bash example/run_docker.sh
4. See the error

Environment (please complete the following information):

• OS: MacOS
• Terminal: iTerm

Additional context
This line convert relative path to absolute path

pirlib/example/run_docker.sh

Line 14 in b2d8cc9

EXAMPLEDIR=$([[ $EXAMPLEDIR = /* ]] && echo "$EXAMPLEDIR" || echo "$PWD/${EXAMPLEDIR#./}")

If cd to the example directory and comment out this line, then the run_docker.sh can be successfully executed.
Or using VSCode terminal to run bash example/run_docker.sh as the converted path won't contain spaces.