Relates #3258
After a chat with @aslushnikov we add this in two iterations. The first one (this PR) is about scheduled runs for testing the latest tip-of-tree version of the browsers daily and the next PR is about opening an automated PRs once its passing (not sure if its worth to add for failing too) or sending Telegram/Slack notifications.
Current status is that Firefox (around 2 hours) and WebKit (around 3-4 hours) works.
Known issues which I fix before we merge:
- ~~Changes in `test/base.fixture.ts` will get extracted in #3453~~
Feel free to review, current blockers are before we can merge:
- ~~#3453~~
- potential git clone optimisation by aslushnikov
Everytime I sync my fork to upstream, I get failure notifications:
```
Run failed for master (3edfb2a)
Repository: rwoll/playwright
Workflow: devrelease
Duration: 10 minutes and 34.0 seconds
Finished: 2020-07-31 18:30:13 UTC
```
Since forks should never have the necessary secrets to publish
the npm and Docker packages, we limit the running of these jobs to avoid
noisy failures for contributors.
- Repository name has to start with `public/` to be exported to dockerhub.
- Remove `DOCKER_USERNAME` to avoid unnecessary masking in our logs.
- Publish dev versions of Docker image only when changes to docker file
happen. (this is why NPM publishing and Docker publishing for dev
releases are now separate).
- Release publishing in two separate jobs to make them independent.
References #2926
