Validate volume name before cloning

[felipecruz91]

This PR fixes a bug where you mistakenly could clone a volume by using an existing name.

[github-actions]

Docker image tag(s) pushed:

docker/volumes-backup-extension:pr-71

Labels added to images:

org.opencontainers.image.title=volumes-backup-extension
org.opencontainers.image.description=Back up, clone, restore, and share Docker volumes effortlessly.
org.opencontainers.image.url=https://github.com/docker/volumes-backup-extension
org.opencontainers.image.source=https://github.com/docker/volumes-backup-extension
org.opencontainers.image.version=pr-71
org.opencontainers.image.created=2022-09-15T10:57:33.839Z
org.opencontainers.image.revision=61827b9cbd317295b74e0715a0d05ef9126f4e25
org.opencontainers.image.licenses=Apache-2.0
org.opencontainers.image.title=Volumes Backup & Share
org.opencontainers.image.description=Back up, clone, restore, and share Docker volumes effortlessly.
org.opencontainers.image.vendor=Docker Inc.
org.opencontainers.image.revision=b5020ff11e7105eb9761e33fe13ffb310f85977f

[atomist]

Dockerfile

Vulnerabilities

Comparison

👏 No new critical or high vulnerabilities compared with target branch main

---

More details are available in the vulnerability report

[atomist]

Dockerfile

Vulnerabilities

Comparison

👏 No new critical or high vulnerabilities compared with target branch main

---

More details are available in the vulnerability report