---

stages:
    - build

build:
  stage: build
  tags:
    - docker
    - linux
  image:
    name: gcr.io/kaniko-project/executor:v1.6.0-debug
    entrypoint: ["/busybox/sh", "-c"]
  script:
    - 'mkdir -p /kaniko/.docker'
    - 'echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json'
    - |
        echo "Select CI env. vars.:";
        printenv | egrep '^CI_' | sort
    # N/B: There could be more than one merge-request open with this branch's HEAD
    - |
        IMAGE_TAG="${CI_COMMIT_BRANCH}";
        if [[ -n "$CI_COMMIT_TAG" ]]; then
            IMAGE_TAG="${CI_COMMIT_TAG}";
        elif [[ -n "$CI_OPEN_MERGE_REQUESTS" ]]; then
            IMAGE_TAG=mr$(echo "${CI_OPEN_MERGE_REQUESTS}" | cut -d, -f -1 | cut -d\! -f 2);
        elif [[ "$CI_COMMIT_BRANCH" == "main" ]]; then
            IMAGE_TAG="latest";
        fi
        echo "Building/Pushing to: ${CI_REGISTRY_IMAGE}:${IMAGE_TAG}";
    - |
        /kaniko/executor \
            --context $CI_PROJECT_DIR \
            --dockerfile $CI_PROJECT_DIR/Containerfile \
            --destination "${CI_REGISTRY_IMAGE}:${IMAGE_TAG}" \
            --label "org.opencontainers.image.source=${CI_PROJECT_URL}" \
            --label "org.opencontainers.image.revision=$CI_COMMIT_SHA" \
            --label "org.opencontainers.image.created=$CI_JOB_STARTED_AT" \
            --label "org.opencontainers.image.version=${IMAGE_TAG}"