Refactor release notes generation in GitHub Actions workflow for Arch Linux ISO builds

- Create temporary file for release notes within the Docker container.
- Streamline the process of generating release notes by capturing output directly to a temporary file.
- Ensure release notes are copied from the container to the host and set in GITHUB_ENV.
- Maintain structured content for features, download instructions, and checksum information.

Author: Githubguy132010

.github/workflows/build.yaml

@@ -136,39 +136,53 @@ jobs:
       - name: Generate Release Notes
         id: release_notes
         run: |
+          # Create a temporary file for release notes
+          TEMP_RELEASE_NOTES=$(mktemp)
+          
           docker exec arch-container bash -c "
             set -euo pipefail
             cd /workdir
             
             # Initialize release notes
-            echo 'RELEASE_NOTES<<EOF' >> \$GITHUB_ENV
-            echo '🚀 Arch Linux ISO without system beeps (build ${{ env.DATE }})' >> \$GITHUB_ENV
-            echo '' >> \$GITHUB_ENV
-            echo '### Changes' >> \$GITHUB_ENV
-            
-            # Get changes since last release
-            if git tag | grep -q .; then
-              LAST_TAG=\$(git describe --tags --abbrev=0 2>/dev/null || echo '')
-              if [ ! -z \"\$LAST_TAG\" ]; then
-                echo '#### Commits since last release:' >> \$GITHUB_ENV
-                git log \"\$LAST_TAG\"..HEAD --pretty=format:'- %s' | grep -v 'Merge' >> \$GITHUB_ENV
-                echo '' >> \$GITHUB_ENV
+            {
+              echo '🚀 Arch Linux ISO without system beeps (build ${{ env.DATE }})'
+              echo ''
+              echo '### Changes'
+              
+              # Get changes since last release
+              if git tag | grep -q .; then
+                LAST_TAG=\$(git describe --tags --abbrev=0 2>/dev/null || echo '')
+                if [ ! -z \"\$LAST_TAG\" ]; then
+                  echo '#### Commits since last release:'
+                  git log \"\$LAST_TAG\"..HEAD --pretty=format:'- %s' | grep -v 'Merge'
+                  echo ''
+                fi
               fi
-            fi
-            
-            # Add standard information
-            echo '### Features' >> \$GITHUB_ENV
-            echo '- Automatic daily build' >> \$GITHUB_ENV
-            echo '- System beeps disabled' >> \$GITHUB_ENV
-            echo '- ISO SHA256 and SHA512 checksums included' >> \$GITHUB_ENV
-            echo '' >> \$GITHUB_ENV
-            echo '### Download' >> \$GITHUB_ENV
-            echo '- Download the ISO and verify checksums before use' >> \$GITHUB_ENV
-            echo '' >> \$GITHUB_ENV
-            echo '### Checksums' >> \$GITHUB_ENV
-            echo 'SHA256 and SHA512 checksums are available in the uploaded files.' >> \$GITHUB_ENV
-            echo 'EOF' >> \$GITHUB_ENV
+              
+              # Add standard information
+              echo '### Features'
+              echo '- Automatic daily build'
+              echo '- System beeps disabled'
+              echo '- ISO SHA256 and SHA512 checksums included'
+              echo ''
+              echo '### Download'
+              echo '- Download the ISO and verify checksums before use'
+              echo ''
+              echo '### Checksums'
+              echo 'SHA256 and SHA512 checksums are available in the uploaded files.'
+            } > /tmp/release_notes
           "
+          
+          # Copy release notes from container to host
+          docker cp arch-container:/tmp/release_notes $TEMP_RELEASE_NOTES
+          
+          # Set the release notes in GITHUB_ENV
+          echo 'RELEASE_NOTES<<EOF' >> $GITHUB_ENV
+          cat $TEMP_RELEASE_NOTES >> $GITHUB_ENV
+          echo 'EOF' >> $GITHUB_ENV
+          
+          # Cleanup
+          rm -f $TEMP_RELEASE_NOTES
 
       - name: Create Release
         id: create_release