Git executable not found in $PATH

My builds with hugo_extended:latest is failing with error message

$ hugo
Building sites … ERROR 2019/06/28 11:13:58 Failed to read Git log: Git executable not found in $PATH
Total in 946 ms
Error: Error building site: logged 1 error(s)

I was able to successfully build yesterday.

• Passing build yesterday: https://gitlab.com/thomasjsn/uctrl-dev/-/jobs/241237025
• Failing build today: https://gitlab.com/thomasjsn/uctrl-dev/-/jobs/241929967
• My .gitlab-ci.yml: https://gitlab.com/thomasjsn/uctrl-dev/blob/master/.gitlab-ci.yml

Possibly caused by image rebuilds in #31 (closed)? !86 (merged) removed installation of git package.

ARG HUGO_APK="ca-certificates openssl git"
apk add --update --no-cache ${HUGO_APK} && \

Adding this to my .gitlab-ci.yml solved the problem:

before_script:
  - apk add --update --no-cache git