add .env, wired database to settings, updated readme

back_latienda/settings.py

@@ -12,9 +12,16 @@ https://docs.djangoproject.com/en/2.2/ref/settings/
 
 import os
 
+import dotenv
+
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
+# Get variables from .env
+dotenv.read_dotenv(
+    dotenv=os.path.join(BASE_DIR, '.env'),
+    override=True
+    )
 
 # Quick-start development settings - unsuitable for production
 # See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/
@@ -37,6 +44,13 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+
+    'core',
+    'companies',
+    'products',
+    'history',
+    'stats',
+
 ]
 
 MIDDLEWARE = [
@@ -73,11 +87,16 @@ WSGI_APPLICATION = 'back_latienda.wsgi.application'
 # Database
 # https://docs.djangoproject.com/en/2.2/ref/settings/#databases
 
+# Databases configuration
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
-    }
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': os.getenv('DB_NAME'),
+        'USER': os.getenv('DB_USER'),
+        'PASSWORD': os.getenv('DB_PASSWORD'),
+        'HOST': os.getenv('DB_HOST', 'localhost'),
+        'PORT': os.getenv('DB_PORT', '5432'),
+    },
 }