Docker container definition for CPLEX using only the CPLEX Python API.
The Dockerfile first installs a full CPLEX and then removes everything that is not required to run the CPLEX Python API.
By default the files install into /ilog/CPLEX directory in the container. This
can be changed by modifying install.properties and Dockerfile.
By default the files install Python 3.7. This can be changed by modifying
CPX_PYVERSION in Dockerfile.