Polish and Fixing issues when using "docker-compose up" (#2039)

* add missing dependencies to be able to use docker

without these dependencies, the `docker-compose up` command is failing
- `rrdtool-dev` and `librrd` when building `rrdtool-0.1.15.tar.gz`
- `make` and `file` when building `gevent-1.5.0.tar.gz`

* disable secure cookies for being able to login when docker is used with runserver (there is no ssl)

* run develop command to avoid a hard failure after login when using the docker image (version check is performed but pkg_resources is not able to find modoboa distribution)

* polish multi stage docker build (adding missing dependencies for pip install and when running the application); use a virtual environment which is shared between the stages by using a base image and others will extend this

Dockerfile.dev

@@ -1,21 +1,23 @@
 FROM python:3.6-alpine as base
 
 MAINTAINER Antoine Nguyen <tonio@ngyn.org>
+ENV VIRTUAL_ENV=/opt/venv
+ENV PATH="$VIRTUAL_ENV/bin:$PATH"
 
-RUN apk add --update openssl python3-dev libffi-dev gcc musl-dev libxml2-dev libxslt-dev \
-    libressl-dev jpeg-dev \
+FROM base as build
+
+RUN apk add --update openssl librrd python3-dev libffi-dev gcc musl-dev libxml2-dev libxslt-dev \
+    libressl-dev jpeg-dev rrdtool-dev file make \
     && rm -rf /var/cache/apk/*
-
+RUN python3 -m venv $VIRTUAL_ENV
 WORKDIR /tmp
 COPY requirements.txt /tmp
 COPY test-requirements.txt /tmp
-RUN pip install --user  -r requirements.txt --user -r test-requirements.txt
+RUN pip install -r requirements.txt -r test-requirements.txt
 
-FROM python:3.6-alpine
-COPY --from=base /root/.local /root/.local
-ENV PATH=/root/.local/bin:$PATH
-RUN apk add --no-cache --update libxml2-dev libxslt-dev\
+FROM base as run
+COPY --from=build $VIRTUAL_ENV $VIRTUAL_ENV
+RUN apk add --no-cache --update librrd libxslt libjpeg libressl git rrdtool \
     && rm -rf /var/cache/apk/*
-
 RUN mkdir /code
 WORKDIR /code

docker-compose.yml

@@ -13,6 +13,6 @@ services:
       PYTHONPATH: ".."
       DB: "SQLITE"
       DEBUG: "True"
-    command: sh -c "cd test_project && python3 manage.py migrate && python3 manage.py load_initial_data && python3 manage.py runserver 0:8000"
+    command: sh -c "python3 setup.py develop && cd test_project && python3 manage.py migrate && python3 manage.py load_initial_data && python3 manage.py runserver 0:8000"
     volumes:
       - .:/code

test_project/test_project/settings.py

@@ -46,8 +46,8 @@ SITE_ID = 1
 # Security settings
 
 X_FRAME_OPTIONS = "SAMEORIGIN"
-CSRF_COOKIE_SECURE = True
-SESSION_COOKIE_SECURE = True
+CSRF_COOKIE_SECURE = False
+SESSION_COOKIE_SECURE = False
 
 # Application definition