Creating Volume Mount from docker run command & sharing same Volume Mounts among multiple containers

Tested Infrastructure

Platform	Number of Instance	Reading Time
Play with Docker	1	5 min

Pre-requisite

Create an account with DockerHub
Open PWD Platform on your browser
Click on “Add New Node”

Volumes can be shared across containers

Preparations

Clean your docker host using the commands :

$ docker rm -f $(docker ps -a -q)

$ docker volume rm $(docker volume ls -q)

Task

The Task for this lab is to create a volume, call it my_volume.
you should than run a simple an thin container and attach a volume to it. use the image selaworkshops/busybox:latest and use any name to the mounted volume directory (e.g : data)
change something in the volume folder , e.g : add a file with some content.
create a second volume mounted to the same volume , make sure the file you created in step 3 exists !

Instructions

Display existing volumes:
```
$ docker volume ls
```
Create a new volume:
```
$ docker volume create my-volume
```

Inspect the new volume to find the mountpoint (volume location):

$ docker volume inspect my-volume

[
 {
     "CreatedAt": "2018-06-13T20:36:15Z",
     "Driver": "local",
     "Labels": {},
     "Mountpoint": "/var/lib/docker/volumes/my-volume/_data",
     "Name": "my-volume",
     "Options": {},
     "Scope": "local"
 }
]

Let’s run a container and mount the created volume to the root:

$ docker run -it -v my-volume:/data --name my-container selaworkshops/busybox:latest

Create a new file under /data:

$ cd /data
$ echo "hello" > hello.txt
$ ls

Open other terminal instance and run other container with the same volume:

$ docker run -it -v my-volume:/data --name my-container-2 selaworkshops/busybox:latest

Inspect the /data folder (the created file will be there):
```
$ cd data
$ ls
```

Exit from both containers and delete them:

$ exit
$ docker rm -f my-container my-container-2

Ensure the containers were deleted
```
$ docker ps -a
```

Run a new container attaching the created volume:

$ docker run -it -v my-volume:/data --name new-container selaworkshops/busybox:latest

Inspect the /data folder (the created file will be there):
```
$ cd data
$ ls
```
Exit from the container and delete it:
```
$ exit
$ docker rm -f new-container
```

Next » The docker network Command