Add CI pipeline for pulling updates

spec:

  inputs:

    upstream:

      description: The upstream repository to pull changes from

      default: https://gitlab.com/HiPhish/jinja.vim.git

    branch:

      description: The branch in the upstream repository to fetch

      default: master

---

workflow:

  rules:

  - if: $CI_PIPELINE_SOURCE == "schedule"

  - if: $CI_PIPELINE_SOURCE == "web"

Merge:

  image:

    name: docker.io/alpine/git:latest

    entrypoint: ["/bin/sh", "-c"]

  script:

  - git fetch "$[[ inputs.upstream ]]"

      "$[[ inputs.branch ]]:upstream/$[[ inputs.branch ]]"

  - git merge -Xours --no-ff -m "Merge upstream changes"

      "upstream/$[[ inputs.branch ]]"

  - git push

    ${CI_PROJECT_URL/:\/\//:\/\/gitlab-ci-token:${CI_JOB_TOKEN}@}

    HEAD:${CI_COMMIT_REF_NAME}