storeDir seems to copy files

storeDirTest.txt

ATX-MC01:2017-08-08_nf_storedir lukegoodsell$ ls -la
total 16
drwxr-xr-x   3 lukegoodsell  staff  102  8 Aug 11:48 .
drwxr-xr-x  19 lukegoodsell  staff  646  8 Aug 11:41 ..
-rwxr-xr-x   1 lukegoodsell  staff  213  8 Aug 11:45 test.nf
ATX-MC01:2017-08-08_nf_storedir lukegoodsell$ cat test.nf 
#!/usr/bin/env nextflow

process testProc {
	storeDir "testProcOut"
	
	output:
	file "testProcFile.txt" into testProcFileChannel
	
	shell:
	'''
	echo "hi" > testProcFile.txt
	'''
}

testProcFileChannel.println()

ATX-MC01:2017-08-08_nf_storedir lukegoodsell$ ./test.nf 
N E X T F L O W  ~  version 0.24.4
Launching `./test.nf` [modest_nightingale] - revision: fc3dfd3627
[warm up] executor > local
[6a/afaebd] Submitted process > testProc
/Volumes/LG_01_WD3TB/tmp/2017-08-08_nf_storedir/testProcOut/testProcFile.txt
ATX-MC01:2017-08-08_nf_storedir lukegoodsell$ ./test.nf 
N E X T F L O W  ~  version 0.24.4
Launching `./test.nf` [sick_nightingale] - revision: fc3dfd3627
[warm up] executor > local
[skipping] Stored process > testProc
/Volumes/LG_01_WD3TB/tmp/2017-08-08_nf_storedir/testProcOut/testProcFile.txt
ATX-MC01:2017-08-08_nf_storedir lukegoodsell$ find ./ -iname testProcFile.txt | xargs realpath | sort -u | xargs gstat -c '%i %n'
11434461 /Volumes/LG_01_WD3TB/tmp/2017-08-08_nf_storedir/testProcOut/testProcFile.txt
11434459 /Volumes/LG_01_WD3TB/tmp/2017-08-08_nf_storedir/work/6a/afaebd123b34ba2bcd541190ade8d9/testProcFile.txt