The idea is to start simple and get users a good feel for how this works
within 5 minutes or less. We should cover the three popular OSes, and
ensure that everything works as expected.
At the end of this, users will have Dagger set up for local CI/CD, and
know how to make a change to the example app and re-run the build, test
& deploy loop.
This is part of https://github.com/dagger/dagger/issues/1327
Signed-off-by: Gerhard Lazu <gerhard@lazu.co.uk>