ci: setup releasing using actions (#1)

.gitea/workflows/release.yml

@@ -0,0 +1,48 @@
+name: Release
+on:
+  workflow_dispatch:
+
+jobs:
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # to be able to publish a GitHub release
+      issues: write # to be able to comment on released issues
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Prepare git
+        run: |
+          git config --global user.email "gitea@bjornp.com"
+          git config --global user.name "gitea-actions"
+
+      - name: Determine release version and changelog
+        run: npx commit-and-tag-version
+
+      - name: Build release
+        working-directory: src
+        run: |
+          VERSION=$(jq '.version' info.json | xargs echo -n)
+          zip -r ../prometheus-exporter_$VERSION.zip .
+
+      - name: Push changelog and tag
+        run: git push --follow-tags
+
+      - name: Get latest tag and changelog fragment
+        id: tag
+        run: |
+          echo tag="$(git describe --tags --abbrev=0)" >> $GITHUB_OUTPUT
+          echo "changelog<<EOF" >> $GITHUB_OUTPUT
+          awk '/^## / { if (version_found) exit; version_found=1 } version_found { print }' CHANGELOG.md | sed '1d' >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
+      - name: Create release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: prometheus-exporter_*.zip
+          body: ${{ steps.tag.outputs.changelog }}
+          name: ${{ steps.tag.outputs.tag }}
+          tag_name: ${{ steps.tag.outputs.tag }}
+          md5sum: true