diff --git a/.gitea/workflows/backup-volumes.yml b/.gitea/workflows/backup-volumes.yml
index 0fa73d7..a87fa61 100644
--- a/.gitea/workflows/backup-volumes.yml
+++ b/.gitea/workflows/backup-volumes.yml
@@ -23,27 +23,28 @@ jobs:
       - name: Create backup on remote server
         run: |
           BACKUP_DATE=$(date +%Y%m%d_%H%M%S)
+          echo "BACKUP_DATE=$BACKUP_DATE" >> $GITHUB_ENV
 
-          ssh ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }} << 'ENDSSH'
+          ssh ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }} << ENDSSH
             set -e
 
             BACKUP_DATE="$BACKUP_DATE"
-            BACKUP_BASE_DIR="$HOME/backups"
-            BACKUP_DIR="$BACKUP_BASE_DIR/$BACKUP_DATE"
+            BACKUP_BASE_DIR="\$HOME/backups"
+            BACKUP_DIR="\$BACKUP_BASE_DIR/\$BACKUP_DATE"
 
-            echo "Creating backup directory: $BACKUP_DIR"
-            mkdir -p "$BACKUP_DIR"
+            echo "Creating backup directory: \$BACKUP_DIR"
+            mkdir -p "\$BACKUP_DIR"
 
             echo "Listing available volumes:"
             docker volume ls
 
             # Backup Gitea Data
             echo "Backing up gitea-data..."
-            VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-data$' | head -n1)
-            if [ -n "$VOLUME_NAME" ]; then
+            VOLUME_NAME=\$(docker volume ls --format '{{.Name}}' | grep 'gitea-data\$' | head -n1)
+            if [ -n "\$VOLUME_NAME" ]; then
               docker run --rm \
-                -v "$VOLUME_NAME":/source:ro \
-                -v "$BACKUP_DIR":/backup \
+                -v "\$VOLUME_NAME":/source:ro \
+                -v "\$BACKUP_DIR":/backup \
                 alpine tar czf /backup/gitea-data.tar.gz -C /source .
               echo "✓ gitea-data backed up"
             else
@@ -52,11 +53,11 @@ jobs:
 
             # Backup Gitea Database
             echo "Backing up gitea-database..."
-            VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-database$' | head -n1)
-            if [ -n "$VOLUME_NAME" ]; then
+            VOLUME_NAME=\$(docker volume ls --format '{{.Name}}' | grep 'gitea-database\$' | head -n1)
+            if [ -n "\$VOLUME_NAME" ]; then
               docker run --rm \
-                -v "$VOLUME_NAME":/source:ro \
-                -v "$BACKUP_DIR":/backup \
+                -v "\$VOLUME_NAME":/source:ro \
+                -v "\$BACKUP_DIR":/backup \
                 alpine tar czf /backup/gitea-database.tar.gz -C /source .
               echo "✓ gitea-database backed up"
             else
@@ -65,11 +66,11 @@ jobs:
 
             # Backup MinIO Data
             echo "Backing up minio-data..."
-            VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'minio-data$' | head -n1)
-            if [ -n "$VOLUME_NAME" ]; then
+            VOLUME_NAME=\$(docker volume ls --format '{{.Name}}' | grep 'minio-data\$' | head -n1)
+            if [ -n "\$VOLUME_NAME" ]; then
               docker run --rm \
-                -v "$VOLUME_NAME":/source:ro \
-                -v "$BACKUP_DIR":/backup \
+                -v "\$VOLUME_NAME":/source:ro \
+                -v "\$BACKUP_DIR":/backup \
                 alpine tar czf /backup/minio-data.tar.gz -C /source .
               echo "✓ minio-data backed up"
             else
@@ -78,11 +79,11 @@ jobs:
 
             # Backup Gitea Runner Data
             echo "Backing up gitea-runner-data..."
-            VOLUME_NAME=$(docker volume ls --format '{{.Name}}' | grep 'gitea-runner-data$' | head -n1)
-            if [ -n "$VOLUME_NAME" ]; then
+            VOLUME_NAME=\$(docker volume ls --format '{{.Name}}' | grep 'gitea-runner-data\$' | head -n1)
+            if [ -n "\$VOLUME_NAME" ]; then
               docker run --rm \
-                -v "$VOLUME_NAME":/source:ro \
-                -v "$BACKUP_DIR":/backup \
+                -v "\$VOLUME_NAME":/source:ro \
+                -v "\$BACKUP_DIR":/backup \
                 alpine tar czf /backup/gitea-runner-data.tar.gz -C /source .
               echo "✓ gitea-runner-data backed up"
             else
@@ -90,34 +91,33 @@ jobs:
             fi
 
             # Create manifest
-            cd "$BACKUP_DIR"
-            cat > manifest.txt << EOF
-            Backup created: $(date)
-            Hostname: $(hostname)
+            cd "\$BACKUP_DIR"
+            cat > manifest.txt << 'MANIFEST_EOF'
+            Backup created: \$(date)
+            Hostname: \$(hostname)
 
             Files:
-            $(ls -lh *.tar.gz 2>/dev/null || echo "No backup files created")
+            \$(ls -lh *.tar.gz 2>/dev/null || echo "No backup files created")
 
             Checksums (SHA256):
-            $(sha256sum *.tar.gz 2>/dev/null || echo "No files to checksum")
-            EOF
+            \$(sha256sum *.tar.gz 2>/dev/null || echo "No files to checksum")
+MANIFEST_EOF
 
             echo "Backup manifest:"
             cat manifest.txt
 
-            echo "Total backup size: $(du -sh $BACKUP_DIR)"
+            echo "Total backup size: \$(du -sh \$BACKUP_DIR)"
           ENDSSH
 
       - name: Download backups from remote server
         run: |
-          BACKUP_DATE=$(date +%Y%m%d_%H%M%S)
           mkdir -p backups
 
           echo "Downloading backups from remote server..."
-          scp -r ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }}:~/backups/$BACKUP_DATE backups/
+          scp -r ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }}:~/backups/${{ env.BACKUP_DATE }} backups/
 
           echo "Downloaded files:"
-          ls -lh backups/$BACKUP_DATE/
+          ls -lh backups/${{ env.BACKUP_DATE }}/
 
       - name: Upload backup artifacts
         uses: actions/upload-artifact@v4
@@ -129,10 +129,10 @@ jobs:
       - name: Cleanup old remote backups (keep last 7 days)
         if: always()
         run: |
-          ssh ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }} << 'ENDSSH'
+          ssh ${{ secrets.BACKUP_USER }}@${{ secrets.BACKUP_HOST }} << 'CLEANUP_EOF'
             # Lösche Backups älter als 7 Tage
             find ~/backups -maxdepth 1 -type d -name "????????_??????" -mtime +7 -exec rm -rf {} \; 2>/dev/null || true
             echo "Old backups cleaned up (kept last 7 days)"
             echo "Current backups:"
             ls -lh ~/backups/ 2>/dev/null || echo "No backups found"
-          ENDSSH
+CLEANUP_EOF