docker build issue : missing cran-R package (getopt_1.20.0)

[cahaisv]

Hi,

--2017-12-08 13:30:05-- https://cran.r-project.org/src/contrib/getopt_1.20.0.tar.gz
Resolving cran.r-project.org (cran.r-project.org)... 137.208.57.37
Connecting to cran.r-project.org (cran.r-project.org)|137.208.57.37|:443... connected.
HTTP request sent, awaiting response... 404 Not Found
2017-12-08 13:30:05 ERROR 404: Not Found.