Enable automatic releases (#53)

Author: TobiX

.github/release-drafter.yml

@@ -1,2 +1 @@
 _extends: .github
-tag-template: simple-theme-plugin-$NEXT_MINOR_VERSION

.github/workflows/cd.yaml

@@ -0,0 +1,59 @@
+# Note: additional setup is required, see https://www.jenkins.io/redirect/continuous-delivery-of-plugins
+
+name: cd
+on:
+  workflow_dispatch:
+  check_run:
+    types:
+      - completed
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    outputs:
+      should_release: ${{ steps.verify-ci-status.outputs.result == 'success' && steps.interesting-categories.outputs.interesting == 'true' }}
+    steps:
+      - name: Verify CI status
+        uses: jenkins-infra/verify-ci-status-action@v1.2.0
+        id: verify-ci-status
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          output_result: true
+
+      - name: Release Drafter
+        uses: release-drafter/release-drafter@v5
+        if: steps.verify-ci-status.outputs.result == 'success'
+        with:
+          name: next
+          tag: next
+          version: next
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Check interesting categories
+        uses: jenkins-infra/interesting-category-action@v1.0.0
+        id: interesting-categories
+        if: steps.verify-ci-status.outputs.result == 'success'
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  release:
+    runs-on: ubuntu-latest
+    needs: [validate]
+    if: needs.validate.outputs.should_release == 'true'
+    steps:
+      - name: Check out
+        uses: actions/checkout@v2.4.0
+        with:
+          fetch-depth: 0
+      - name: Set up JDK 8
+        uses: actions/setup-java@v2.5.0
+        with:
+          distribution: temurin
+          java-version: 8
+      - name: Release
+        uses: jenkins-infra/jenkins-maven-cd-action@v1.2.0
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+          MAVEN_TOKEN: ${{ secrets.MAVEN_TOKEN }}

.github/workflows/changelog.yml

@@ -1,2 +1,3 @@
 -Pconsume-incrementals
 -Pmight-produce-incrementals
+-Dchangelist.format=%d.v%s

.mvn/maven.config

@@ -10,7 +10,7 @@
   </parent>
 
   <artifactId>simple-theme-plugin</artifactId>
-  <version>${revision}${changelist}</version>
+  <version>${changelist}</version>
   <packaging>hpi</packaging>
 
   <name>Simple Theme Plugin</name>
@@ -41,8 +41,7 @@
   </scm>
 
   <properties>
-    <revision>0.8</revision>
-    <changelist>-SNAPSHOT</changelist>
+    <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/simple-theme-plugin</gitHubRepo>
     <jenkins.version>2.204</jenkins.version>
     <configuration-as-code.version>1.36</configuration-as-code.version>