Previously, the permissions of all items *within* the repository were already updated, but not the repository itself.
This resulted into the error 'cp: cannot stat `/tmp/src/*': Permission denied' when running "docker/test/run.sh mariadb".
Otherwise, you may get permission denied when trying to remove the temp
dir as a normal user, because the files were created by the 'vitess'
user inside Docker.
This is an alternative to 'make integration_test',
with the following advantages:
* Tests run in Docker, so no bootstrap is necessary.
* Tests are hermetic and can run in parallel.
* Test against different flavors just by setting a flag.
* Failing tests are retried to see if they are flaky.
* A failed test will be recorded for later inspection, while the script
continues to run other tests.
* A test that takes too long will be considered stuck and retried.
There's plenty of room for improvement, but now that we have something
in a more readable language than Makefile, we can iterate.
This will let contributors test changes without having to do bootstrap
at all.
It also makes it easy to test against multiple flavors without having to
swap out installed packages. You can even run tests against multiple
flavors simultaneously without interfering, if you have enough RAM.
Anthony Yeh
Michael Berlin