Use locally built dist for demo workflows

.github/workflows/demo-failure-cases.yml

@@ -4,12 +4,23 @@ on:
   workflow_dispatch:
 
 jobs:
-
-  failing-build:
+  build-distribution:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Build and upload distribution
+      uses: ./.github/actions/build-dist
+
+  failing-build:
+    needs: build-distribution
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Test build failure
       uses: ./setup-gradle
       continue-on-error: true
@@ -18,10 +29,14 @@ jobs:
         arguments: not-a-valid-task
 
   wrapper-missing:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Test wrapper missing
       uses: ./setup-gradle
       continue-on-error: true
@@ -30,10 +45,14 @@ jobs:
         arguments: help
 
   bad-configuration:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Test bad config value
       uses: ./setup-gradle
       continue-on-error: true

.github/workflows/demo-job-summary.yml

@@ -2,7 +2,6 @@ name: Demo Job Summary, for Gradle builds
 
 on:
   workflow_dispatch:
-  push:
 
 jobs:
   many-gradle-builds:
@@ -10,16 +9,9 @@ jobs:
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
-    - name: Build distribution
-      shell: bash
-      run: |
-        npm install
-        npm run build
-      working-directory: sources
-    - uses: actions/setup-java@v4
-      with:
-        distribution: 'temurin'
-        java-version: '11'
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Setup Gradle
       uses: ./setup-gradle
     - name: Build kotlin-dsl project
@@ -51,16 +43,14 @@ jobs:
         dependency-graph: generate-and-upload
 
   successful-builds-with-no-summary:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
-    - name: Build distribution
-      shell: bash
-      run: |
-        npm install
-        npm run build
-      working-directory: sources
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Setup Gradle
       uses: ./setup-gradle
       with:
@@ -73,16 +63,14 @@ jobs:
       run: ./gradlew assemble check --no-scan
 
   pre-existing-gradle-home:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
     - name: Checkout sources
       uses: actions/checkout@v4
-    - name: Build distribution
-      shell: bash
-      run: |
-        npm install
-        npm run build
-      working-directory: sources
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Pre-create Gradle User Home
       shell: bash
       run: |

.github/workflows/demo-pr-build-scan-comment.yml

@@ -7,11 +7,23 @@ permissions:
   pull-requests: write
 
 jobs:
-  successful-build-with-always-comment:
+  build-distribution:
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout project sources
+    - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Build and upload distribution
+      uses: ./.github/actions/build-dist
+
+  successful-build-with-always-comment:
+    needs: build-distribution
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout sources
+      uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Setup Gradle
       uses: ./setup-gradle
       with:
@@ -22,10 +34,14 @@ jobs:
       run: ./gradlew build --scan
 
   successful-build-with-comment-on-failure:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout project sources
+    - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Setup Gradle
       uses: ./setup-gradle
       with:
@@ -36,10 +52,14 @@ jobs:
       run: ./gradlew build --scan
 
   failing-build-with-comment-on-failure:
+    needs: build-distribution
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout project sources
+    - name: Checkout sources
       uses: actions/checkout@v4
+    - name: Initialize integ-test
+      uses: ./.github/actions/init-integ-test
+
     - name: Setup Gradle
       uses: ./setup-gradle
       with: