Setup fully automated versioning CD (#276)

* Setup fully automated versioning CD

* Apply suggestions from code review

Co-authored-by: Alexander Brandes <brandes.alexander@web.de>

---------

Co-authored-by: Alexander Brandes <brandes.alexander@web.de>

.github/dependabot.yml

@@ -14,3 +14,7 @@ updates:
     # Checkstyle >=10 requires Java 11+
     - dependency-name: "com.puppycrawl.tools:checkstyle"
       versions: [">= 10.0"]
+- package-ecosystem: github-actions
+  directory: /
+  schedule:
+    interval: monthly

.github/workflows/cd.yaml

@@ -0,0 +1,19 @@
+# Note: additional setup is required, see https://www.jenkins.io/redirect/continuous-delivery-of-plugins
+
+name: cd
+on:
+  workflow_dispatch:
+  check_run:
+    types:
+      - completed
+
+permissions:
+  checks: read
+  contents: write
+
+jobs:
+  maven-cd:
+    uses: jenkins-infra/github-reusable-workflows/.github/workflows/maven-cd.yml@v1
+    secrets:
+      MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
+      MAVEN_TOKEN: ${{ secrets.MAVEN_TOKEN }}

.mvn/maven.config

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

pom.xml

@@ -8,8 +8,8 @@
   </parent>
 
   <properties>
-    <revision>3.1</revision>
-    <changelist>-SNAPSHOT</changelist>
+    <revision>4</revision>
+    <changelist>999999-SNAPSHOT</changelist>
     <gitHubRepo>jenkinsci/oic-auth-plugin</gitHubRepo>
     <jenkins.version>2.361</jenkins.version>
     <spotbugs.failOnError>true</spotbugs.failOnError>
@@ -18,7 +18,7 @@
   </properties>
 
   <artifactId>oic-auth</artifactId>
-  <version>${revision}${changelist}</version>
+  <version>${revision}.${changelist}</version>
   <packaging>hpi</packaging>
 
   <scm>