Update configuration and episodes for GitLab CI/CD with CMSSW

- Changed contact email in config.yaml to cms-phys-conveners-CAT@cern.ch.
- Updated episode list in config.yaml to include new GitLab CI/CD episodes.
- Added instructor notes in 01-introduction.md to clarify lesson purpose for newcomers.
- Enhanced 02-cmsswexercise.md with instructor notes for audience familiarity.
- Removed outdated 02-compiling.md and replaced it with new episodes on setting up and running CMSSW in GitLab CI/CD.
- Introduced 03-gitlabci-setenv.md detailing CMSSW setup in GitLab CI/CD.
- Created 04-gitlabci-run-analysis.md for running CMSSW analysis jobs in GitLab CI/CD.
- Deleted 05-running.md as its content is now integrated into the new episodes.
- Updated instructor notes to reflect the current lesson status and encourage content improvement.
- Expanded glossary in reference.md to include a definition for CVMFS.

Author: alefisico

config.yaml

@@ -39,7 +39,7 @@ source: 'https://github.com/FNALLPC/cmsdas-cat-gitlab-cms'
 branch: 'main'
 
 # Who to contact if there are any issues
-contact: 'team@carpentries.org'
+contact: 'cms-phys-conveners-CAT@cern.ch'
 
 # Navigation ------------------------------------------------
 #
@@ -67,11 +67,8 @@ contact: 'team@carpentries.org'
 episodes: 
 - 01-introduction.md
 - 02-cmsswexercise.md
-# - 02-compiling.md
-# - 03-vomsproxy.md
-# - 04-catservices.md
-# - 05-running.md
-# - 07-building-image.md
+- 03-gitlabci-setenv.md
+- 04-gitlabci-run-analysis.md
 
 # Information for Learners
 learners: 

episodes/01-introduction.md

@@ -35,6 +35,12 @@ If you are familiar with Gitlab CI/CD, you can skip ahead to the next lesson.
 
 ::::::::
 
+:::::::: instructor
+
+This lesson is for newcomers with little or no prior experience with GitLab CI/CD. In a real class, this lesson could be skipped or shortened if the audience is already familiar with GitLab CI/CD.
+::::::::
+
+
 ## Why Use GitLab CI/CD?
 
 **GitLab CI/CD** (Continuous Integration/Continuous Deployment) helps you automate tasks like testing, building, or deploying your code every time you make changes. This ensures your code is always working, your results are reliable, and saves you time from *catching errors* and doing repetitive tasks manually.

episodes/02-cmsswexercise.md

@@ -20,6 +20,18 @@ exercises: 10
 
 ::::::
 
+::::: callout
+
+If you are familiar with analysis development in CMSSW, you can skip ahead to the next lesson.
+
+:::::
+
+:::::::: instructor
+
+This lesson is for newcomers with little or no prior experience with CMSSW. In a real class, this lesson could be skipped or shortened if the audience is already familiar with CMSSW analysis development.
+::::::::
+
+
 ## A Simple Example with CMSSW
 
 Let’s walk through a basic example for CMSSW-based analyses. We’ll use a simple analysis code that selects pairs of electrons and muons, compile it in a CMSSW environment, and run it on a small dataset. This workflow is typical for HEP analysis at CERN. For you to understand the workflow, we will first try to run the analysis code on your "local" machine (cmslpc, lxplus, university machine).