Set PYTHONIOENCODING UTF-8 for output UTF-8

Author: manabuishii

Dockerfile

@@ -1,10 +1,6 @@
 FROM python:2.7.12
-RUN apt-get update ; apt-get install -y locales ; apt-get clean
-RUN locale-gen en_US.UTF-8
-ENV LANG en_US.UTF-8
-ENV LANGUAGE en_US:en
-ENV LC_ALL en_US.UTF-8
 RUN pip install pytz influxdb
+ENV PYTHONIOENCODING=utf-8
 ADD lnetatmo.py /
 ADD netatmo2influxdb.py /
 ADD get.sh /