fix user permissions and print coverage numbers on CI

[bahmutov]

to confirm it is working

[bahmutov]

Interesting - when we run with default user, we get coverage folders owned by root which nyc cannot see later

trying to run as user 1001

[bahmutov]

Tried with --user 1001 - it was hanging
Tried with --user node - it did not have permissions to access local files