added podman info to postgres

Software/Postgresql.md

@@ -47,6 +47,20 @@ host  all  all ::1/128  ident
 
 Make sure the last item on each line (in this case `ident`) is changed to `md5`. Then restarted the database `sudo systemctl restart postgresql.service`
 
+### Podman (Universal)
+Podman is a container system very similar to docker that lets you run programs in an isolated and self-contained environment. 
+
+First install [Podman](../Tools/Podman.md) on your computer.
+
+The container image will automatically be downloaded when you run postgres database with:
+```sh
+podman run -d --name postgres -p 5432:5432 -e POSTGRES_PASSWORD=mysecretpassword docker.io/library/postgres:latest
+```
+
+Checkout the [Podman document](../Tools/Podman.md) to learn how to manage containers.
+
+**Note:** You can skip the Setup stage below, it is already setup inside the container
+
 ## Setup
 First make sure postgres is running:
 ```sh