use unbuffered output

this prints stdout directly instead of buffering it. otherwise docker logs is useless because its not realtime

Dockerfile

@@ -14,4 +14,4 @@ RUN pip install -r requirements.txt
 COPY scrape.py ./
 
 USER nobody:nogroup
-CMD [ "python", "scrape.py" ]
+CMD [ "python", "-u", "scrape.py" ]