diff --git a/8.0/Dockerfile b/8.0/Dockerfile
index 2f7036b..b944a30 100644
--- a/8.0/Dockerfile
+++ b/8.0/Dockerfile
@@ -54,10 +54,13 @@ COPY ./entrypoint.sh /
 COPY ./openerp-server.conf /etc/odoo/
 RUN chown odoo /etc/odoo/openerp-server.conf
 
-RUN locale-gen en_GB.UTF-8
-ENV LANG en_GB.UTF-8
-ENV LANGUAGE en_GB:en
-ENV LC_ALL en_GB.UTF-8
+ARG language=en_GB:en
+ARG lang=en_GB.UTF-8
+
+RUN locale-gen ${lang}
+ENV LANG ${lang}
+ENV LANGUAGE ${language}
+ENV LC_ALL ${lang}
 
 # Mount /var/lib/odoo to allow restoring filestore and /mnt/extra-addons for users addons
 RUN mkdir -p /mnt/extra-addons \