fix(#96): Edit README file

Add intermediate step in the local deployment with Docker, indicating that the creation of an .env file is necessary.

README.md

@@ -87,11 +87,24 @@ Once the installation is finished, we must create the database and the user that
     git clone https://github.com/innosoft-innoweb/innosoft-innoweb-1
   
     cd innosoft-innoweb-1
-  
+    ```
+    
+2. This project uses environment variables that need to be set before running the project, you will need to create a file called ".env" inside the directory with the following content:
+
+    ```
+    DJANGO_SECRET_KEY = 'django-insecure-_$s8&xy9@woe3wlr(pqj3r(n8q78o4j##h-f4e%@3=ms_d$!i7'
+    PRODUCTION_DB_USER = ' '
+    PRODUCTION_DB_PASSWORD = ' '
+    ```
+    An example django secret key is given here, but the best option is to have it generated by the user himself, knowing that it is a key that is used to encrypt       sensitive data in the django application, and is at least 50 characters long.
+    
+ 3. Once the .env file is created, run the following command in the project directory:
+    
+    ```
     docker-compose up -d
     ```
 
-2. Finally, open the browser and access the following link: [http://localhost:8000](http://localhost:8000)
+4. Finally, open the browser and access the following link: [http://localhost:8000](http://localhost:8000)
 
 ## Vagrant Local Deployment