Moved LANG into Dockerfile

Improved compatibility with other deployment methods.

Dockerfile

@@ -40,7 +40,7 @@ RUN /opt/netbox/venv/bin/pip install \
 ARG FROM
 FROM ${FROM} as main
 
-ENV DEBIAN_FRONTEND=noninteractive
+ENV DEBIAN_FRONTEND=noninteractive LANG=C.UTF-8
 RUN . /etc/os-release \
   && apt-get update -qq \
   && apt-get upgrade \

env/netbox.env

@@ -15,7 +15,6 @@ EMAIL_USERNAME=netbox
 EMAIL_USE_SSL=false
 EMAIL_USE_TLS=false
 HOUSEKEEPING_INTERVAL=86400
-LANG=C.UTF-8
 MAX_PAGE_SIZE=1000
 MEDIA_ROOT=/opt/netbox/netbox/media
 METRICS_ENABLED=false