Update 'README.md'

README.md

@@ -74,19 +74,18 @@ What this means in regards to this project is that docker makes it
 easy to setup containers.
 
 Install docker based on instructions for your linux distribution.
+I use podman (an alternative from RedHat) because it allows for running without root permissions.
 
 ### Docker networking
 
-I have the docker container for the database attached to a 
-network called "pharmaceutical_research" because I have a 
-container with pgadmin4 running on that docker network.
-This can be adjusted in the dockerfile.
+It is helpful to construct an external docker network by running
 
-I also have the database container open on port 5432, the typical 
-postgresql database port.
+`docker network create network_name`
 
-### Database logins
-I have choosen the database user of *root* with a password of *root*
-because I don't really need this database to be secure.
+and then including that network in the docker-compose.yaml
+
+# Environment Variables (`.env` file)
+I use an single .env file to setup the docker containers and pass configuration variables to 
+the python scripts. I would suggest changing the default values in `sample.env` to match your needs.
 If you do need to think about the security of your database I would recommend 
 you start by changing these.