distro: change directory before copying files.
Merge branch 'feature-copy-pwd'
distro: fix copy.txt path after changing directory.
Merge pull request #4 from hansode/fix-copytxt-path

distro: fix copy.txt path after changing directory.
disk: replace "./" with pwd.
Merge pull request #5 from hansode/fix-rootfs-path

disk: replace "./" with pwd.
replace `pwd` with ${PWD}.
Merge pull request #6 from hansode/remove-pwd-command-dependency

replace `pwd` with ${PWD}.
replace `pwd` with ${PWD}.
Merge pull request #7 from hansode/remove-pwd-command-dependency

replace `pwd` with ${PWD}.
Merge pull request #47 from hansode/master

remove unnecessary pwd command dependency