How to build a simple opencv example inside the container?

[KansaiUser]

I have successfully build one of the images in the repo (I had to change the base though since the one here in the repo does not exist anymore)

I want to try it by building a simple example of opencv using cuda. For example

#include <iostream>
#include "opencv2/opencv.hpp"
   
int main (int argc, char* argv[])
{
    //Read Two Images 
    cv::Mat h_img1 = cv::imread("images/cameraman.tif");
    cv::Mat h_img2 = cv::imread("images/circles.png");
    //Create Memory for storing Images on device
    cv::cuda::GpuMat d_result1,d_img1, d_img2;
    cv::Mat h_result1;
    //Upload Images to device     
    d_img1.upload(h_img1);
    d_img2.upload(h_img2);
​
    cv::cuda::add(d_img1,d_img2, d_result1);
    //Download Result back to host
    d_result1.download(h_result1);
    cv::imshow("Image1 ", h_img1);
    cv::imshow("Image2 ", h_img2);
    cv::imshow("Result addition ", h_result1);
    cv::imwrite("images/result_add.png", h_result1);
    cv::waitKey();
    return 0;
}

I tried to build this with

g++ -std=c++11 -o image_addition one.cpppkg-config --cflags --libs opencv

but it failed

Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found
one.cpp:2:10: fatal error: opencv2/opencv.hpp: No such file or directory
    2 | #include "opencv2/opencv.hpp"
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated

so my question is, how do you build opencv source code with your container??
It seems pkg-config does not find opencv

Please advice.