Update docker settings

[blackbearman]

Update architectures names as on DockerHub.
Add MacOS specific files to .gitignore.
Update QEMU emulator version.
Update Docker instruction.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.50%. Comparing base (9130731) to head (4e32896).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #64      +/-   ##
==========================================
- Coverage   82.53%   82.50%   -0.03%     
==========================================
  Files         115      115              
  Lines       16743    16743              
  Branches     2382     2382              
==========================================
- Hits        13819    13814       -5     
- Misses       2924     2929       +5     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.