docker build fails

[karankatiyar92]

hi i am trying to build the docker on ubuntu 16 (i dont think this should be an issue ) and it fails with the following code below . can you please suggest how to resolve it

Step 10/21 : RUN wget https://github.com/opencv/opencv/archive/$OPENCV_VERSION.tar.gz && tar xvf $OPENCV_VERSION.tar.gz && cd opencv-$OPENCV_VERSION/ && mkdir -p release && cd release && cmake .. && make -j$NTHREADS && make install && cd ../../ && rm $OPENCV_VERSION.tar.gz && rm -r opencv-$OPENCV_VERSION ---> Running in c51445570e1e --2020-12-22 15:59:18-- https://github.com/opencv/opencv/archive/2.4.13.6.tar.gz Resolving github.com (github.com)... failed: Temporary failure in name resolution. wget: unable to resolve host address 'github.com' The command '/bin/sh -c wget https://github.com/opencv/opencv/archive/$OPENCV_VERSION.tar.gz && tar xvf $OPENCV_VERSION.tar.gz && cd opencv-$OPENCV_VERSION/ && mkdir -p release && cd release && cmake .. && make -j$NTHREADS && make install && cd ../../ && rm $OPENCV_VERSION.tar.gz && rm -r opencv-$OPENCV_VERSION' returned a non-zero code: 4

Thanks

[karankatiyar92]

tried multiple times and it worked thanks