update: zero_gpu, fontTools

app.py

@@ -1,10 +1,11 @@
 import random
+import spaces
 import gradio as gr
 from sample import (arg_parse, 
                     sampling,
                     load_fontdiffuer_pipeline)
 
-
+@spaces.GPU()
 def run_fontdiffuer(source_image, 
                     character, 
                     reference_image,

requirements.txt

@@ -7,3 +7,4 @@ gradio
 pyyaml
 pygame
 opencv-python
+fontTools