Updated docker instructions (#4745)

* Updated docker instructions

Added docker-compose example
Added unzip instructions
Updated folder naming

* Apply suggestions from code review

---------

Co-authored-by: Scott Anderson <sanderson@users.noreply.github.com>

content/influxdb/cloud-iox/visualize-data/grafana.md

@@ -128,19 +128,43 @@ cannot be installed on or used with Grafana Cloud.
 {{% /tab-content %}}
 {{% tab-content %}}
 <!---------------------------- BEGIN DOCKER CONTENT --------------------------->
+**Unzip the FlightSQL plugin archive to your Grafana custom plugin directory**.
+ The custom plugin directory can exist anywhere in your filesystem as long as
+ the Grafana process can access it.
+
+    ```sh
+    unzip influxdata-flightsql-datasource-0.1.2.zip
+    ```
 
 To add the FlightSQL plugin to your pre-existing Grafana Docker deployment
-mount the following volume to your Grafana container:
+mount the plugin directory, `influxdata-flightsql-datasource`, as a volume to your Grafana container:
 
+Docker Run
 ```bash 
 docker run \
-  --volume $PWD/dist:/var/lib/grafana/plugins/influxdata-flightsql-datasource \
+  --volume $PWD/influxdata-flightsql-datasource:/var/lib/grafana/plugins/influxdata-flightsql-datasource \
   --publish 3000:3000 \
   --name grafana \
   --env GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS=influxdata-flightsql-datasource \
   grafana/grafana:latest
 ```
 
+##### Docker-Compose
+
+```yaml
+version: '3'
+services:
+  grafana:
+    image: grafana/grafana:latest
+    ports:
+      - 3000:3000
+    environment:
+      - GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS=influxdata-flightsql-datasource
+    volumes: 
+      - ./influxdata-flightsql-datasource:/var/lib/grafana/plugins/influxdata-flightsql-datasource
+    restart: always
+```
+
 {{% note %}}
 It's important to set the `GF_PLUGINS_ALLOW_LOADING_UNSIGNED_PLUGINS`
 environment variable. The FlightSQL plugin is unsigned and Grafana requires you