[Tech task] Support system specs in docker

[giladshanan]

Release Notes

Allows system specs to run in docker.
Also updates schema.rb

[LeticiaErrandonea]

I'm getting this error:

Selenium::WebDriver::Error::SessionNotCreatedError:
            Could not start a new session. Error while creating session with the driver service. Stopping driver service: Could not start a new session. Response code 500. Message: session not created: Chrome failed to start: exited normally.
              (chrome not reachable)
              (The process started from chrome location /usr/bin/google-chrome is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
            Host info: host: '04443cec6256', ip: '172.22.0.2'
            Build info: version: '4.15.0', revision: '1d14b5521b'
            System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.4.16-linuxkit', java.version: '11.0.21'
            Driver info: driver.version: unknown
            Build info: version: '4.15.0', revision: '1d14b5521b'
            System info: os.name: 'Linux', os.arch: 'amd64', os.version: '6.4.16-linuxkit', java.version: '11.0.21'
            Driver info: driver.version: unknown

I tried a "start over" solution but didn't work:

1. Delete all previous containers (except db)
2. $ docker-compose up
3. $ docker exec -it <CONTAINER> bash
4. Run spec with :js tag

Still got the same errors.

[giladshanan]

@LeticiaErrandonea I'm able to run specs locally with this set up, and I'm not sure yet why it's not working on your end. I'm going to merge this in for now and we can keep digging.