diff --git a/Dockerfile b/Dockerfile
index 3c28b0f..38e1800 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,9 @@ COPY requirements.txt .
 
 RUN pip install --no-cache-dir -r requirements.txt
 
+ENV PYTHONUNBUFFERED=1 
+ENV PYTHONIOENCODING=UTF-8 
+
 ENV CALDAV_URL $CALDAV_URL 
 ENV CALENDAR_NAME $CALENDAR_NAME 
 ENV USERNAME $USERNAME