[CI:DOCS] rootless_tutorial: Remove incorrect advice regarding volume…

[eriksjolund]

…s and mount points

• Remove the instructions
  "You should always give the full path to the volume you'd like to mount"
  "The mount point must exist in the container"
  as they are incorrect as shown by this example

  $ mkdir dir1
  $ podman run --rm -v ./dir1:/dir1:Z docker.io/library/fedora:36 touch /dir1/file
  $ ls dir1
  file
  $ podman run --rm docker.io/library/fedora:36 ls -l /dir1
  ls: cannot access '/dir1': No such file or directory
  $ podman --version
  podman version 4.1.1
  $
  

Signed-off-by: Erik Sjölund [email protected]

Does this PR introduce a user-facing change?

None

[rhatdan]

$ podman run --rm -v ./dir1:/dir1:Z docker.io/library/fedora:36 touch /dir1/file
Works BUT
$ podman run --rm -v dir1:/dir1:Z docker.io/library/fedora:36 touch /dir1/file
Will have a very different result, and this should be pointed out. Basically the volume needs to be a full path or begin with a . or ../

[eriksjolund]

I added one of the advices back (now also mentioning relative paths starting with a dot).

[TomSweeneyRedHat]

LGTM
@rhatdan is your concern addressed?

[rhatdan]

/approve
/lgtm
Thanks @eriksjolund

[openshift-ci]

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