Juan questions

Juan answers

• What does "pch" stand for?
• Branches on constructor not covered
• Docker: What are the best practices when tagging images for an environment
• Angular 2: How to mock ChangeDetectorRef while unit testing
• ng serve not working in Docker container
• Error: EACCES: permission denied, access '/usr/lib/node_modules'
• What is an exclamation point in GraphQL?