Shortened comment and added additional detail

compose.yml

@@ -21,8 +21,8 @@ services:
 
   redis:
     image: redis:7.2.4
-    ports: [] # Disable exposed port so that Redis can run inside of the container and not be exposed to host machine -> If using [] for the redis stuff, keeping right beside "ports: " works because apparently implicit map keys need to be followed by map values (the implicit map key thing is the error I got if I tried to do a similar thing to the port binding comment below (I don't know why, but I think it's due to it being an empty list and thus needs to be right beside the ":"))
-    #- "127.0.0.1:6379:6379"
+    ports: [] # Disable exposed port so that Redis can run inside of the container and not be exposed to host machine.
+    #- "127.0.0.1:6379:6379" # Remove [] next to ports and uncomemnt this line to expose redis to the system again
     networks:
       - app-network