Use overlay2 storage driver on docker build
On Docker 18.09.0+, overlay2 is used by default.
Signed-off-by: Takuya Noguchi takninnovationresearch@gmail.com
Closes #13 (closed)
On Docker 18.09.0+, overlay2 is used by default.
Signed-off-by: Takuya Noguchi takninnovationresearch@gmail.com
Closes #13 (closed)