diff --git a/install/gargamelle/Dockerfile b/install/gargamelle/Dockerfile
index d554d79af1ad872f27d9abc473495b08847e2313..8e93bffcc3771e53d18ba6c24689d61200bf39f4 100755
--- a/install/gargamelle/Dockerfile
+++ b/install/gargamelle/Dockerfile
@@ -9,6 +9,7 @@ MAINTAINER ISCPIF <gargantext@iscpif.fr>
 USER root
 
 ### Update and install base dependencies
+RUN echo "############ DEBIAN LIBS ###############"
 RUN apt-get update && \
     apt-get install -y \
     apt-utils ca-certificates locales \
@@ -19,33 +20,37 @@ RUN apt-get update && \
     postgresql-9.5 postgresql-client-9.5 postgresql-contrib-9.5
 
 
-RUN echo "############ DEBIAN LIBS ###############"
 ### Configure timezone and locale
-RUN echo "Europe/Paris" > /etc/timezone && \
-    dpkg-reconfigure -f noninteractive tzdata && \
-    sed -i -e 's/# en_GB.UTF-8 UTF-8/en_GB.UTF-8 UTF-8/' /etc/locale.gen && \
+RUN echo "###########  LOCALES & TZ #################"
+RUN echo "Europe/Paris" > /etc/timezone
+ENV TZ "Europe/Paris"
+
+RUN sed -i -e 's/# en_GB.UTF-8 UTF-8/en_GB.UTF-8 UTF-8/' /etc/locale.gen && \
     sed -i -e 's/# fr_FR.UTF-8 UTF-8/fr_FR.UTF-8 UTF-8/' /etc/locale.gen && \
-    echo 'LANG="fr_FR.UTF-8"' > /etc/default/locale && \
     dpkg-reconfigure --frontend=noninteractive locales && \
-    update-locale LANG=fr_FR.UTF-8
+    echo 'LANG="fr_FR.UTF-8"' > /etc/default/locale
+ENV LANG fr_FR.UTF-8
+ENV LANGUAGE fr_FR.UTF-8
+ENV LC_ALL fr_FR.UTF-8
+
 
-RUN echo "###########  LOCALES & TZ #################"
 ### Install main dependencies and python packages based on Debian distrib
+RUN echo "############# PYTHON DEPENDENCIES ###############"
 RUN apt-get update && apt-get install -y \
         libxml2-dev xml-core libgfortran-5-dev \
         libpq-dev \
         python3.5 \
         python3-dev \
+        # for numpy, pandas and numpyperf
         python3-six python3-numpy python3-setuptools \
-        # ^for numpy, pandas and numpyperf
         python3-numexpr \
-        #python dependencies
+        # python dependencies
         python3-pip \
         # for lxml
         libxml2-dev libxslt-dev
         #libxslt1-dev zlib1g-dev
-RUN echo "############# PYTHON DEPENDENCIES ###############"
-#UPDATE AND CLEAN
+
+# UPDATE AND CLEAN
 RUN apt-get update && apt-get autoclean &&\
     rm -rf /var/lib/apt/lists/*
 #NB: removing /var/lib will avoid to significantly fill up your /var/ folder on your native system
@@ -65,9 +70,8 @@ ADD psql_configure.sh /
 ADD django_configure.sh /
 
 RUN . /env_3-5/bin/activate && pip3 install -r requirements.txt && \
-    pip3  install git+https://github.com/zzzeek/sqlalchemy.git@rel_1_1 &&\
-    python3 -m nltk.downloader averaged_perceptron_tagger -d /usr/local/share/nltk_data;
-    # nltk.data.path.append('path_to_nltk_data')
+    pip3  install git+https://github.com/zzzeek/sqlalchemy.git@rel_1_1 && \
+    python3 -m nltk.downloader averaged_perceptron_tagger -d /usr/local/share/nltk_data
 
 RUN chown gargantua:gargantua -R /env_3-5
 
@@ -81,6 +85,4 @@ RUN echo "listen_addresses='*'" >> /etc/postgresql/9.5/main/postgresql.conf
 
 EXPOSE 5432 8000
 
-VOLUME ["/srv/",]
-
-
+# VOLUME ["/srv/",]