v1.1.1

• fix: request OIDC groups scope for group-based role mapping
• Merge remote-tracking branch 'upstream/main'
• feat: add local development build instructions with Docker
• chore: build images only on tag push, update command docs
• Merge pull request leonmeijer#9 from leonmeijer/chore/cleanup-and-dev-tools
• chore: cleanup and add dev tools
• Merge pull request leonmeijer#8 from pezzking/feature/notification-channels
• feat: add notification channels management and tests
• fix: use solid background for modal dialogs
• feat: add notification channels settings UI
• feat: add email, slack, and webhook notification channels