Update containerization dependency in ctr-example to the latest tag of
containerization. Additionally make README for ctr-example more clear.
Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>
- Example Makefile now supports fetch-default-kernel for easier setup
- added 'make all' to build Containerization and ctr-example in one step
- Updated README to add build and run instructions