RUN curl -k -o app.jar -kfSL https://mynexus:9006/repository/legacy/1.0.2/app.jar

sudo docker build -t myimage .

% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: mynexus
The command '/bin/sh -c curl -k -o app.jar -kfSL https://mynexus:9006/repository/legacy/1.0.2/app.jar' returned a non-zero code: 6

$ curl -k -o app.jar -kfSL https://mynexus:9006/repository/legacy/1.0.2/app.jar
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 3613k  100 3613k    0     0  1413k      0  0:00:02  0:00:02 --:--:-- 1413k