chore(deps): update alpine:3.7 docker digest to 9225145

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
alpine	final	digest	8421d9a -> 9225145

---

Renovate configuration

:date: Schedule: At any time (no schedule defined).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Renovate Bot. View repository job log here.