add: gunicorn使うようにした

Dockerfile

@@ -8,4 +8,4 @@ COPY requirements.txt .
 RUN pip install -r requirements.txt
 
 COPY . .
-CMD ["python3", "main.py"]
+CMD ["gunicorn", "main:app", "-b", "0.0.0.0:8080"]

main.py

@@ -14,7 +14,11 @@ BASE_IMAGE = Image.open("images/base.png")
 MPLUS_FONT = ImageFont.truetype("fonts/MPLUSRounded1c-Regular.ttf", size=16)
 
 
-def draw_text(im, ofs, string, font="fonts/MPLUSRounded1c-Regular.ttf", size=16, color=(0, 0, 0, 255), split_len=None, padding=4, auto_expand=False, disable_dot_wrap=False):
+def draw_text(
+    im, ofs, string, font="fonts/MPLUSRounded1c-Regular.ttf", size=16,
+    color=(0, 0, 0, 255), split_len=None, padding=4, auto_expand=False,
+    disable_dot_wrap=False
+):
 
     draw = ImageDraw.Draw(im)
     fontObj = ImageFont.truetype(font, size=size)
@@ -125,4 +129,5 @@ def main():
     return send_file(res, mimetype="image/png")
 
 
-app.run(host="0.0.0.0", port=3000)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=3000)

requirements.txt

@@ -2,4 +2,4 @@ pillow==9.4.0
 pilmoji==2.0.2
 flask==2.2.3
 requests==2.28.2
-
+gunicorn==20.1.0