updating environment variables

- removed docker compose version not needed anymore
- updated readme file

.env.example

@@ -18,3 +18,4 @@ EMAIL_HOST_USER=''
 EMAIL_HOST_PASSWORD=''
 EMAIL_BACKEND_CONSOLE='True/False'
 EMAIL_USE_TLS=True
+SECRET_KEY=''

README.md

@@ -21,6 +21,20 @@ About the project:
 
 ---
 
+### How to setup SECRET_KEY in Development
+
+.env file
+
+SECRET_KEY=''
+
+To generate a new secret key, you can use the following command:
+
+1. python3 manage.py shell
+2. from django.core.management.utils import get_random_secret_key
+3. print(get_random_secret_key())
+
+---
+
 ### Using Makefile
 
 1. Clone the repository
@@ -34,7 +48,7 @@ About the project:
 
 .env file
 
-* EMAIL_HOST='sandbo x.smtp.mailtrap.io' 
+* EMAIL_HOST='sandbo x.smtp.mailtrap.io'
 * EMAIL_HOST_USER='*********'
 * EMAIL_HOST_PASSWORD='******'
 * EMAIL_PORT='2525'
@@ -75,4 +89,5 @@ Docker Volumes for production:
 ### Email Settings in Production
 
 .env file
+
 * EMAIL_BACKEND_CONSOLE=False

docker-compose.yml

@@ -1,6 +1,5 @@
-# This is is meant for local development, but should give an idea of what you
+# This is  meant for local development, but should give an idea of what you
 # can consider in production.
-version: '3.8'
 
 services:
   db:
@@ -32,15 +31,13 @@ services:
     extra_hosts:
       - "host.docker.internal:host-gateway"
     environment:
-      # TODO: dollar signs in the KEY are interpolated, therefore escaped here
-      # with double "$$". Maybe move to .env file to simplify?
-      - SECRET_KEY='django-insecure-w!h85bp^$$e8gm%c23r!0%9i7yzd=6w$$s&ic+6!%306&kj8@k*5'
+      - SECRET_KEY=${SECRET_KEY}
       - DEBUG=True
       - DB_HOST=db
       - DB_PORT=5432
       - DB_NAME=term_db  # see POSTGRES_DB above
       - DB_USER=sadilar  # see POSTGRES_USER above
-      - DB_PASSWORD=sadilar  # see POSTGRES_PASSWORD above
+      - DB_PASSWORD=${DB_PASSWORD}
       - TESTING_DIR=/app/general/tests/files/
       - FEATURE_FLAG=search_feature
       - EMAIL_HOST=${EMAIL_HOST-}