Features:
- Support of dettached state, common in CD/CI environments
- Add CI/CD integration, ensuring up-to-date instructions and removing redundant content

Fixes:
- Gitlab-ci.yml script

CI:
- Add npm install command for AgileFlow in GitLab CI script
- Update GitLab CI script to use npx for running AgileFlow
- Update node image in GitLab CI configuration to use full version instead of alpine

Chores:
- Bump version to 0.4.2 in package.json