docker image for NCL, NCO and CDO, based on ubuntu

• find build steps from Dockerfile
• based on ubuntu:18.04
• NCL installed through precompiled binary (ncl lib/bin paths are messed up in apt install), with NCARG_ROOT and PATH set
• NCO, CDO installed through apt

1. install docker
2. Download Dockerfile through whatever method
3. build and run

   docker image build -t nclncocdo:v1 .
   docker container run -it nclncocdo:v1
   

4. use NCL, NCO, CDO in the command line

1. install docker
2. docker pull theropod/nclncocdo:latest to pull the image or docker run -it theropod/nclncocdo:latest to run it directly

Dockerfile to install NCL on ubuntu:20.04. Ubuntu 20.04 has removed support for libgfortran3, so 2 deb packages from 18.04 have to be downloaded and installed (see Dockerfile for further info)

you can't directly run a X11 window inside docker, here is an alternative approach using x11docker:

• pull image
• install x11docker
• x11docker -i theropod/nclncocdo:latest
• try ng4ex xy05n -clean