split the requirements and settings

Dockerfile

@@ -3,5 +3,4 @@ ENV PYTHONUNBUFFERED 1
 ADD . /code
 WORKDIR /code
 RUN pip install wheel
-RUN pip install -r requirements.txt
-WORKDIR /code/network_inventory
+RUN pip install -r requirements/docker.txt

docker-compose.yml

@@ -13,12 +13,12 @@ services:
 
   web:
     build: .
-    command: python manage.py runserver 0.0.0.0:8000
+    command: ./run.sh network_inventory.settings.docker
     volumes:
       - .:/code
     ports:
       - "8000:8000"
     environment:
-      - DJANGO_SETTINGS_MODULE=network_inventory.settings
+      - DJANGO_SETTINGS_MODULE=network_inventory.settings.local
     depends_on:
       - db

network_inventory/network_inventory/settings/base.py

@@ -19,18 +19,6 @@ BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 # Quick-start development settings - unsuitable for production
 # See https://docs.djangoproject.com/en/2.0/howto/deployment/checklist/
 
-# SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = 'kzx(i9^@*g^cgp(_3052%*1d%zyu^2z_@pgso5!_q@jb-j%4m='
-
-# SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
-
-ALLOWED_HOSTS = [
-    'localhost',
-    '127.0.0.1',
-]
-
-
 # Application definition
 
 INSTALLED_APPS = [
@@ -75,16 +63,6 @@ TEMPLATES = [
 WSGI_APPLICATION = 'network_inventory.wsgi.application'
 
 
-DATABASES = {
-    'default': {
-        'ENGINE': 'django.db.backends.postgresql',
-        'NAME': 'postgres',
-        'USER': 'postgres',
-        'HOST': 'db', # set in docker-compose.yml
-        'PORT': 5432 # default postgres port
-    }
-}
-
 # Password validation
 # https://docs.djangoproject.com/en/2.0/ref/settings/#auth-password-validators
 

network_inventory/network_inventory/settings/docker.py

@@ -0,0 +1,23 @@
+from .base import *
+
+ALLOWED_HOSTS = [
+    'localhost',
+    '127.0.0.1',
+]
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'development_key'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': 'postgres',
+        'USER': 'postgres',
+        'HOST': 'db',
+        'PORT': 5432,
+    }
+}
+

network_inventory/network_inventory/settings/local.py

@@ -0,0 +1,19 @@
+from .base import *
+
+ALLOWED_HOSTS = [
+    'localhost',
+    '127.0.0.1',
+]
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'development_key'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}

network_inventory/network_inventory/settings/production.py

@@ -0,0 +1,22 @@
+from .base import *
+
+ALLOWED_HOSTS = [
+    'inventory.2li.local',
+]
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'kzx(i9^@*g^cgp(_3052%*1d%zyu^2z_@pgso5!_q@jb-j%4m='
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = False
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': 'postgres',
+        'USER': 'postgres',
+        'HOST': 'db',
+        'PORT': 5432,
+    }
+}
+

requirements/base.txt

@@ -2,7 +2,4 @@ wheel
 Django==2.2
 pyaml
 pytz
-psycopg2
 django-guardian
-pytest
-pytest-django

requirements/docker.txt

@@ -0,0 +1,5 @@
+-r base.txt
+
+pytest
+pytest-django
+psycopg2

requirements/local.txt

@@ -0,0 +1,6 @@
+-r base.txt
+
+pytest
+pytest-django
+pytest-cov
+pep8

requirements/production.txt

@@ -0,0 +1,3 @@
+-r base.txt
+
+psycopg2

run.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+cd network_inventory
+python manage.py migrate --settings=$1
+python manage.py loaddata inventory --settings=$1
+python manage.py shell -c "from django.contrib.auth import get_user_model; User = get_user_model(); User.objects.create_superuser('admin', 'admin@example.com', 'password')" --settings=$1
+python manage.py runserver 0.0.0.0:8000 --settings=$1

setup.sh

@@ -1,3 +0,0 @@
-docker-compose run web python manage.py migrate
-docker-compose run web python manage.py loaddata inventory
-docker-compose run web ./manage.py shell -c "from django.contrib.auth import get_user_model; User = get_user_model(); User.objects.create_superuser('admin', 'admin@example.com', 'password')"