instruction: Create a Dockerfile for fundamentals
output: ```dockerfile
  FROM tasks"
  View volume contentsThe Docker Desktop Dashboard provides the ability to view the contents of any volume, as well as the ability to export, import, and clone volumes.Open the Docker Desktop Dashboard and navigate to the Volumes view. In this view, you should see the postgres_data volume.Select the postgres_data volumeâs name.The Data tab shows the contents of the volume and provides the ability to navigate the files. Double-clicking on a file will let you see the contents and make changes.Right-click on any file to save it or delete it.Remove volumesBefore removing a volume, it must not be attached to any containers. If you havenât removed the previous container, do so with the following command (the -f will stop the container first and then remove it):
  
  $ docker rm -f new-db
  There are a few methods to remove volumes, including the following:Select the Delete Volume option on a volume in the Docker Desktop Dashboard.Use the docker volume rm command:
  
  $ docker volume rm postgres_data
  Use the docker volume prune command to remove all unused volumes:
  
  $ docker volume prune
  Additional resourcesThe following resources will help you learn more about volumes:Manage data in DockerVolumesVolume mountsNext stepsNow that you have learned about persisting container data, itâs time to learn about sharing local files with containers.Sharing local files with containers
  Request changesTable of contentsExplanationContainer volumesManaging volumesTry it outUse volumesView volume contentsRemove volumesAdditional resourcesNext steps
  
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