From 9e3236de1ab4447bcf249c59c71d95e12709cd61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julian=20T=C3=B6lle?= <julian.toelle97@gmail.com>
Date: Sat, 7 Sep 2024 22:30:58 +0200
Subject: [PATCH] feat(gitlab): add CI component

This adds a GitLab CI/CD component that can be `included` in users
GitLab CI configuration to integrate releaser-pleaser.

Unlike the GitHub Action, this can not easily run whenever a merge
request description is changed, only when changes are pushed to main.

We also switch the container base image from `static` to `busybox`
as GitLab CI requires a shell (`sh`) binary to be present for the image
use to run jobs.
---
 .ko.yaml          |  5 ++++-
 templates/run.yml | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 templates/run.yml

diff --git a/.ko.yaml b/.ko.yaml
index c7c0e49..49805d6 100644
--- a/.ko.yaml
+++ b/.ko.yaml
@@ -1,3 +1,6 @@
 defaultPlatforms:
   - linux/arm64
-  - linux/amd64
\ No newline at end of file
+  - linux/amd64
+
+# Need a shell for gitlab-ci
+defaultBaseImage: cgr.dev/chainguard/busybox
diff --git a/templates/run.yml b/templates/run.yml
new file mode 100644
index 0000000..8e15a65
--- /dev/null
+++ b/templates/run.yml
@@ -0,0 +1,38 @@
+spec:
+  inputs:
+    # Remember to update docs/reference/gitlab-ci-component.md
+    branch:
+      default: main
+      description: "This branch is used as the target for releases."
+
+    token:
+      description: "GitLab token for creating and updating release MRs."
+
+    extra-files:
+      description: 'List of files that are scanned for version references.'
+      default: ""
+
+    stage:
+      default: build
+      description: 'Defines the build stage'
+    # Remember to update docs/reference/gitlab-ci-component.md
+---
+
+workflow:
+  rules:
+    # There is no way to run a pipeline when the MR description is updated :(
+    - if: $CI_COMMIT_BRANCH == "$[[ inputs.branch ]]"
+
+releaser-pleaser:
+  stage: $[[ inputs.stage ]]
+  image:
+    name: ghcr.io/apricote/releaser-pleaser:v0.3.0 # x-releaser-pleaser-version
+    entrypoint: [""]
+  variables:
+    GITLAB_TOKEN: $[[ inputs.token ]]
+  script:
+    - |
+      rp run \
+        --forge=gitlab \
+        --branch=$[[ inputs.branch ]] \
+        --extra-files=$[[ inputs.extra-files ]]