$ tar -zcf artifacts/source_code.tar.gz . --exclude=artifacts
tar: The following options were used after any non-optional arguments in archive create or update mode.  These options are positional and affect only arguments that follow them.  Please, rearrange them properly.
tar: --exclude ‘artifacts’ has no effect
tar: Exiting with failure status due to previous errors

tar -zcf artifacts/source_code.tar.gz --exclude=artifacts *