Merge branch 'test_build'

* test_build:
  Add gitlab CI integration
  Add test build script

.gitlab-ci.yml

+---
+
+default:
+  image: "archlinux:latest"
+
+stages:
+  - build
+  - prepare
+  - publish
+
+build:
+  after_script:
+    - mv -- output/metrics.txt .
+  artifacts:
+    name: "output"
+    paths:
+      - "output/*"
+    expire_in: 2d
+    reports:
+      metrics: metrics.txt
+  before_script:
+    - pacman -Syu --needed --noconfirm git
+  script:
+    - |
+      if [[ -n "$CI_COMMIT_TAG" ]]; then
+        ./test_build.sh "$CI_COMMIT_TAG"
+      else
+        ./test_build.sh "$(git describe --long | sed 's/\([^-]*-g\)/r\1/;s/-/./g')"
+      fi
+  stage: build
+
+prepare_release:
+  artifacts:
+    reports:
+      dotenv: variables.env
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "schedule" && $CI_PROJECT_PATH == "dvzrv/test" && $SCHEDULED_PUBLISH == "TRUE"'
+  script:
+    - printf "TAG=%(%Y.%m.%d)T.%s\n" -1 "${CI_JOB_ID}" > variables.env
+    - printf "VERSION=%(%Y.%m.%d)T\n" -1 >> variables.env
+  stage: prepare
+
+create_release:
+  before_script:
+    - pacman -Syu --needed --noconfirm release-cli
+  needs:
+    - job: prepare_release
+      artifacts: true
+  release:
+    name: 'Release ${TAG}'
+    description: 'Auto-created release ${TAG} (version ${VERSION}).'
+    tag_name: '$TAG'
+    ref: '$CI_COMMIT_SHA'
+    assets:
+      links:
+        - name: 'Build artifacts'
+          url: '${CI_PROJECT_URL}/-/jobs/artifacts/${TAG}/browse/output?job=build'
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "schedule" && $CI_PROJECT_PATH == "dvzrv/test" && $SCHEDULED_PUBLISH == "TRUE"'
+  script:
+    - printf "Creating release %s...\n" "${TAG}"
+  stage: publish

test_build.sh

+#!/usr/bin/env bash
+#
+# This is a dummy script to create a few files
+
+set -euo pipefail
+
+version="${1}"
+output_dir="output/test/test-${version}"
+_extension=""
+
+mkdir -pv -- "${output_dir}"
+for _extension in {efi,gz,iso,lkrn,pxe,qcow2,xz,zst}; do
+  printf "TEST FILE\n" > "${output_dir}/file.${_extension}"
+done
+
+printf 'foo{bar="baz"} 1\n' output/metrics.txt