Apply suggestions from code review

Co-authored-by: Marek <mail@marek.onl>

.github/workflows/ci-tests.patch-external.yml

@@ -13,7 +13,7 @@ on:
 #! `ci-tests.patch.yml` and `ci-tests.patch-external.yml` must be kept in sync.
 jobs:
   build:
-    name: Build CI Docker / Build images
+    name: Build CI Docker / Build CI image
     # Only run on PRs from external repositories.
     if: ${{ startsWith(github.event_name, 'pull') && github.event.pull_request.head.repo.fork }}
     runs-on: ubuntu-latest

.github/workflows/ci-tests.patch.yml

@@ -34,7 +34,7 @@ on:
 #! `ci-tests.patch.yml` and `ci-tests.patch-external.yml` must be kept in sync.
 jobs:
   build:
-    name: Build CI Docker / Build images
+    name: Build CI Docker / Build CI image
     runs-on: ubuntu-latest
     steps:
       - run: 'echo "No build required"'

.github/workflows/ci-tests.yml

@@ -49,7 +49,7 @@ on:
         default: false
 
   pull_request:
-    # Skip PRs where Rust code and dependencies aren't modified.
+    # Run only on PRs that modify Rust code or dependencies.
     paths:
       # code and tests
       - "**/*.rs"
@@ -67,12 +67,14 @@ on:
       - "docker/**"
       - ".dockerignore"
       - ".github/workflows/ci-tests.yml"
+      - ".github/workflows/sub-ci-unit-tests-docker.yml"
+      - ".github/workflows/sub-ci-integration-tests-gcp.yml"
       - ".github/workflows/sub-deploy-integration-tests-gcp.yml"
       - ".github/workflows/sub-find-cached-disks.yml"
       - ".github/workflows/sub-build-docker-image.yml"
 
   push:
-    # Skip main branch updates where Rust code and dependencies aren't modified.
+    # Run only on main branch updates that modify Rust code or dependencies.
     branches:
       - main
     paths: