Update Dotnet Containerization Docs (#19867)

* Update Dotnet Containerization Docs

This is a condensed version of the two separate commands to connect to the docker container and to log into postgres.

* Update exit commands

Author: JP Bulman

content/language/dotnet/develop.md

@@ -182,16 +182,10 @@ cb36e310aa7e   docker-dotnet-server   "dotnet myWebApp.dll"    About a minute ag
 39fdcf0aff7b   postgres               "docker-entrypoint.s…"   About a minute ago   Up About a minute (healthy)   5432/tcp               docker-dotnet-db-1
 ```
 
-In the previous example, the container ID is `39fdcf0aff7b`. Run the following command to start a bash shell in the postgres container. Replace the container ID with your own container ID.
+In the previous example, the container ID is `39fdcf0aff7b`. Run the following command to connect to the postgres database in the container. Replace the container ID with your own container ID.
 
 ```console
-$ docker exec -it 39fdcf0aff7b bash
-```
-
-Then run the following command to connect to the database.
-
-```console
-postgres@39fdcf0aff7b:/$ psql -d example -U postgres
+$ docker exec -it 39fdcf0aff7b psql -d example -U postgres
 ```
 
 And finally, insert a record into the database.
@@ -206,11 +200,10 @@ You should see output like the following.
 INSERT 0 1
 ```
 
-Close the database connection and exit the container shell by running `exit` twice.
+Close the database connection and exit the container shell by running `exit`.
 
 ```console
 example=# exit
-postgres@39fdcf0aff7b:/$ exit
 ```
 
 ## Verify that data persists in the database