Add CI workflow to check for upstream Alpine updated.

.github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_ALPINE.md

@@ -0,0 +1,13 @@
+---
+title: Upstream dependency got updated - Alpine with tag {{ env.TAG }}
+assignees: Syndesi
+labels: update dependency
+---
+
+Open tasks:
+
+- [ ] Check if Dockerfile compiles with the newest Alpine version.
+- If there are updates:
+  - [ ] Update local Dockerfile.
+  - [ ] Add changelog entry.
+  - [ ] Release new patch release.

.github/workflows/ci-check-upstream-dependency-alpine.yml

@@ -0,0 +1,31 @@
+name: "Check upstream dependency - Alpine"
+on:
+  schedule:
+    - cron: "10 2 * * *"
+permissions:
+  contents: write
+jobs:
+  check-upstream-dependency-alpine:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Load latest Docker Hub tags for Alpine
+        run: |
+          url="https://hub.docker.com/v2/namespaces/library/repositories/alpine/tags?page_size=25"
+          latestTags=$(wget -O - -o /dev/null $url)
+          latestTag=$(echo $latestTags | jq -r '.results[] | .name' | sed -E -n '/^[0-9]+\.[0-9]+\.[0-9]+/ s/^([0-9]+\.[0-9]+)\..*$/\1/p' | sort -V | uniq | tail -n 1)
+          echo "Latest tag: $latestTag"
+          echo "TAG=$latestTag" >> $GITHUB_ENV
+
+      - name: Create new GitHub issue
+        uses: JasonEtco/create-an-issue@v2
+        env:
+          GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          TAG: ${{ env.TAG }}
+        with:
+          filename: .github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_ALPINE.md
+          update_existing: false
+          search_existing: all

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+### Added
+- Add CI workflow to check for upstream Alpine updated.
 
 ## 0.0.24 - 2023-08-21
 ### Changed