Run apt-get update before mk-build-deps
...so apt can download packages
Bug: T352003
How to register an account on GitLab. To prevent spam, new accounts are locked until approved by an admin or the approver bot. You can also file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
...so apt can download packages
Bug: T352003