cleanup azure pipeline and add more comments

.azdo/azure-pipeline.yaml

@@ -1,9 +1,3 @@
-# Starter pipeline
-
-# Start with a minimal pipeline that you can customize to build and deploy your code.
-# Add steps that build, run tests, deploy, and more:
-# https://aka.ms/yaml
-
 trigger:
 - main
 
@@ -12,17 +6,22 @@ pool:
 
 steps:
   - script: docker build -t graphrag:backend -f docker/Dockerfile-backend .
+    displayName: 'Build backend docker image'
   - script: docker build -t graphrag:frontend -f docker/Dockerfile-frontend .
+    displayName: 'Build frontend docker image'
   # Component Governance does not support pyproject.toml yet.
   # For that reason, use toml-to-requirements to export the
   # dependencies into a requirements.txt file.
-  - script: pip install toml-to-requirements
-  - script: toml-to-req --toml-file pyproject.toml --poetry --optional-lists dev,test,backend,frontend
-  # toml-to-req is not perfect. It will leave wildcard characters in the requirements.txt file which we remove
-  - script: sed -i 's/\*//g' requirements.txt
+  - script: |
+      pip install toml-to-requirements
+      toml-to-req --toml-file pyproject.toml --poetry --optional-lists dev,test,backend,frontend
+      # toml-to-req is not perfect. It will leave wildcard characters in the requirements.txt file which we remove
+      sed -i 's/\*//g' requirements.txt
+    displayName: 'Export python dependencies to requirements.txt'
   - task: ComponentGovernanceComponentDetection@0
+    displayName: 'Component Governance - Component Detection'
     inputs:
       scanType: 'Register'
       verbosity: 'Verbose'
       alertWarningLevel: 'High'
-      dockerImagesToScan: graphrag:backend, graphrag:frontend
+      dockerImagesToScan: graphrag:backend,graphrag:frontend