[feat] add relative path option

[fliklab]

Closes #47

Description

• Use relative path instead of full path

ETC

• Test code required

Checklist (Merge should only be performed once all of the following conditions are checked.)

• I have completed the necessary tests and verified that the functionality works as intended.
• I have written the code according to the code style guide.
• I have confirmed that only the intended files and changes have been committed.
• I have discussed these changes with my team members in advance, and all team members are aware of this PR.