UPD

Dockerfile

@@ -13,11 +13,10 @@ RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 RUN apt-get update
 RUN apt-get install -y --no-install-recommends sqlite3 locales
 
+# Set the locale (controllare se è tutto necessario!)
 RUN export LC_ALL="it_IT.UTF-8"
 RUN export LC_CTYPE="it_IT.UTF-8"
-# RUN dpkg-reconfigure locales
 
-# Set the locale
 RUN sed -i '/it_IT.UTF-8/s/^# //g' /etc/locale.gen && \
     locale-gen
 ENV LANG it_IT.UTF-8  

app.py

@@ -31,7 +31,6 @@ def get_dati_lotti():
     lotti_data = []
     for lotto in lotti:  # Model objects
         lotti_data.append(lotto.to_dict())
-    print(lotti_data)
     return jsonify(lotti_data)