fix: clone figlet fonts in GitHub Actions workflow

- Add step to clone xero/figlet-fonts repository before Docker build
- Fixes ENOENT error: public/fonts/figlet-fonts directory missing during build
- Fonts are excluded from git per .gitignore, must be cloned separately

.github/workflows/docker-build-push.yml

@@ -28,6 +28,10 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Clone figlet fonts
+        run: |
+          git clone --depth 1 https://github.com/xero/figlet-fonts.git public/fonts/figlet-fonts
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3