This branch is a preview of OSEM with several prospective changes applied (checked when no longer necessary):

• Explicitly configure database authentication in Docker Compose #2640 Ignored
• Use version range instead of OSEM_RUBY_VERSION. #2646 Ignored
• Install missing test dependency in base image #2647
• Resolve conflict between WebMock and Webdrivers #2648
• Work around ChromeDriver/Chromium crash #2649 Ignored
• Decouple tests from unspecified data ordering #2650
• Decouple tests from unspecified data ordering (part 2) #2652
• Fix access to the version history of organization-level roles #2654
• Ignore schema.rb in RuboCop #2655
• Fix bug in UserDatatable query affecting PostgreSQL #2656
• Remove superfluous click to display Markdown editor #2657
• Fix bug in logging of screenshots of failed tests #2658
• Use Rails transactional tests #2659
• Fix bug in test of animated form #2662
• Update Docker Compose file format: 2.0 → 2.4 (minor) #2663
• Annotate past migrations with Rails version #2665
• Fix migration that fails on conferences without pictures #2666
• Work around bug in migrations to non-null columns #2667
• Serve precompiled assets in example Docker Compose configuration #2673
• Constrain Docker base image to openSUSE Leap 15.1 #2697 No longer applicable
• Update omniauth: 1.9.0 → 1.9.1 (patch) #2698
• Allow leaving OSEM_SMTP_DOMAIN unset #2702
• Remove race condition in test of splash page versioning #2703
• Update Ruby dependency: 2.5.8 → 2.5.9 (patch) #2772 Rejected
• Use openSUSE Registry in production Dockerfile #2773
• Add missing dependencies to production Docker image #2774
• Exclude additional files from Docker images #2775
• Resolve warning about testing only for specific errors #2776
• Use be_successful instead of be_success #2912
• Order rooms by name in the schedule #2913
• Revert skipping of passing tests 7f1557c
• Update venue country name for Countries 4.2 #2962
• Update UserDatatable for ajax-datatables-rails 1 #2963
• Update tests of splashpage forms #2964
• Fix bug in which role assignments aren’t tracked in version history #2965
• Restore test of splashpage revision history #2967
• Re-enable skipped tests #2968
• Basic feature test of survey creation and response #2969
• Correct use of Redcarpet’s safe_links_only flag #2970
• Restore colors parameter of donut chart partial #2971
• Update datatables for ajax-datatables-rails 1 #2972
• Remove excessive word counts #2973
• Minor corrections to the form labels in email settings #2974
• Avoid bug in which switches always display “No” #2976
• Surveys during CFP response survey-during-proposal
• Add setting to disable email notifications of comments toggle-comment-notifications

To test it:

# Update base images
docker-compose pull

# Build the application image
docker-compose build --build-arg "CONTAINER_USERID=$UID" osem

# Initialize the database
docker-compose run --rm osem bundle exec rake db:setup

# Run tests
docker-compose run --rm osem bundle exec rspec

# Clean up
docker-compose down --rmi 'all' --volumes