Feature/configure application for production #6

Created by: ghost

• better splitting of docker-compose files
  • using dockerhub for base images
• Security Settings for production
  • Security Settings with evironment variables
• basic settings for docker-compose
• env-settings-file for running django locally (without docker)

Closes #6 (closed), #121 (closed).

docker/postgis/Dockerfile

-FROM postgres:9.4
-RUN localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
-ENV LANG en_US.utf8
-
-ENV POSTGIS_MAJOR 2.1
-ENV POSTGIS_VERSION 2.1.7+dfsg-0~exp1.pgdg70+1
-
-# postgis is not there per default
-RUN ["echo", "deb http://http.debian.net/debian wheezy-backports main", ">>", "/etc/apt/sources.list"]
-RUN ["apt-get", "update"]
-RUN ["apt-get", "-y", "install", "postgis"]
-RUN mkdir -p /docker-entrypoint-initdb.d
-COPY ./initdb-postgis.sh /docker-entrypoint-initdb.d/postgis.sh