fix: improve Harmonia quick start cleanup (#21221)

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## Description

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Added additional cleanup steps and other minor improvements to the
Harmonia quick start guide.

## Reviews

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- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

content/manuals/harmonia/_index.md

@@ -87,7 +87,7 @@ You should see the following:
 
 1.  Run an Nginx container in the cloud engine:
     ```console
-   $ docker run -d -p 8080:80 nginx
+    $ docker run -d --name cloudnginx -p 8080:80 nginx
     ```
     This maps the container's port `80` to the host's port `8080`. If port `8080` is already in use on your host, you can specify a different port.
 2.  View the Nginx welcome page. Navigate to [`http://localhost:8080/`](http://localhost:8080/).
@@ -97,6 +97,10 @@ You should see the following:
         ```console
         $ docker ps
         ```
+4.  Shut down the container:
+    ```console
+    $ docker kill cloudnginx
+    ```
 
 Running a container with a cloud engine is just as straightforward as running it locally.
 
@@ -179,9 +183,10 @@ Project Harmonia takes advantage of [Synchronized file shares](/manuals/desktop/
 
 1.  Make sure your Docker context is set to `cloudengine`.
 2.  In the Docker Desktop Dashboard, navigate to the **Containers** view.
-3. Select the **lock** icon in the **Ports** column of your running container next to `3000:3000`. 
+3.  If necessary, expand the application listing to show all of its containers.
+4.  Select the **lock** icon in the **Ports** column of your running container next to `3000:3000`.
     This creates a publicly accessible URL that you can share with teammates.
-4. Select the **copy** icon, to copy this URL. 
+5.  Select the **copy** icon, to copy this URL.
 
 To view all shared ports for your Docker context, select the **Shared ports** icon in the bottom-right corner of the Docker Desktop Dashboard.
 
@@ -208,6 +213,12 @@ $ docker harmonia engine share list
 {{< tabs group="method" >}}
 {{< tab name="Docker Desktop">}}
 
+To stop the running project:
+
+```console
+$ docker compose down
+```
+
 To remove a file sync session:
 1. Navigate to your cloud engine in the **Project Harmonia** view.
 2. Select the **Actions** menu and then **Manage file syncs**.
@@ -219,6 +230,12 @@ To remove a cloud engine, navigate to the **Project Harmonia** view and then sel
 {{< /tab >}}
 {{< tab name="CLI">}}
 
+To stop the running project:
+
+```console
+$ docker compose down
+```
+
 To remove the file sync session, run:
 
 ```console