- [x] add `concretize.lp`, `spack.yaml`, etc. to licensed files
- [x] update all licensed files to say 2013-2021 using
`spack license update-copyright-year`
- [x] appease mypy with some additions to package.py that needed
for oneapi.py
- fixed an issue where some undesirable parts of
the spack source tree were being copied into
the image context.
- added a workaround for a tty ioctl warning on
ubuntu
- adjusted how the main images are built so that
`RUN spack ...` works automatically for child
images that base themselves on them.
* Unite Dockerfiles - add build/run/push scripts
* update docker documentation
* update .travis.yml
* switch to using a preprocessor on Dockerfiles
* skip building docker images on pull requests
* update files with copyright info
* tweak when travis builds for docker files are done
