Add git commitOptions.

This means a user can do something like ["-s"] to satisfy DCO bots: https://github.com/apps/dco

README.md

@@ -162,6 +162,12 @@ Below are some properties of the Release Plugin Convention that are specific to
 		<td>main</td>
 		<td>Defines the branch which releases must be done off of. Eg. set to `release` to require releases are done on the `release` branch (or use a regular expression to allow releases from multiple branches, e.g. `/release|main/`). Set to null to ignore.</td>
 	</tr>
+	<tr>
+		<td>Git</td>
+		<td>commitOptions</td>
+		<td>{empty}</td>
+		<td>Defines an array of options to add to the git adapter during a commit.  Example `commitOptions = ["-s"]`</td>
+	</tr>
 	<tr>
 		<td>Git</td>
 		<td>pushOptions</td>

src/main/groovy/net/researchgate/release/GitAdapter.groovy

@@ -40,6 +40,9 @@ class GitAdapter extends BaseScmAdapter {
         final Property<String> requireBranch
         @Optional
         @Input
+        ListProperty<String> commitOptions
+        @Optional
+        @Input
         final Property<Object> pushToRemote
         @Optional
         @Input
@@ -54,6 +57,7 @@ class GitAdapter extends BaseScmAdapter {
 
         GitConfig(Project project) {
             requireBranch = project.objects.property(String.class).convention('main')
+            commitOptions = project.objects.listProperty(String.class).convention([])
             pushToRemote = project.objects.property(Object.class).convention('origin')
             pushOptions = project.objects.listProperty(String.class).convention([])
             signTag = project.objects.property(Boolean.class).convention(false)
@@ -142,6 +146,7 @@ class GitAdapter extends BaseScmAdapter {
         } else {
             command << '-a'
         }
+        command += extension.git.commitOptions.get()
 
         exec(command, directory: workingDirectory, errorPatterns: ['error: ', 'fatal: '])
 

src/test/groovy/net/researchgate/release/GitReleasePluginTests.groovy

@@ -113,4 +113,22 @@ class GitReleasePluginTests extends Specification {
         then:
         remoteRepo.list().any { it == 'gradle.properties' }
     }
+
+    def 'commitOptions are passed through to git command'() {
+        given:
+        executor.exec(['git', 'checkout', '-B', 'myBranch'], failOnStderr: false, directory: localRepo, env: [:])
+        when:
+        project.release {
+            git {
+                requireBranch.set('myBranch')
+                commitOptions.set(['-s'])
+            }
+        }
+        (project.tasks.commitNewVersion as CommitNewVersion).commitNewVersion()
+        String newestCommit = executor.exec(['git', 'show', 'myBranch', '-s'], failOnStderr: false, directory: remoteRepo, env: [:])
+        executor.exec(['git', 'checkout', 'myBranch'], failOnStderr: false, directory: remoteRepo, env: [:])
+        executor.exec(['git', 'reset', '--hard', 'HEAD'], failOnStderr: false, directory: remoteRepo, env: [:])
+        then:
+        newestCommit.contains("Signed-off-by: Unit Test <unit@test>")
+    }
 }