build:
  stage: build
  image: alpine:3.13
  script:
    - apk add bash abuild
    - adduser -D ci
    - addgroup ci abuild
    - su ci -- "/usr/bin/abuild-keygen" -n -a -i
    - su ci -- "./build.sh"
  rules:
    - if: '$CI_COMMIT_BRANCH == "master"'