Add new initialize option as git commit -m "..." --allow-empty"

src/main/scala/gitbucket/core/service/RepositoryCreationService.scala

@@ -89,11 +89,13 @@ trait RepositoryCreationService {
         val gitdir = getRepositoryDir(owner, name)
         JGitUtil.initRepository(gitdir)
 
-        if (initOption == "README") {
+        if (initOption == "README" || initOption == "EMPTY_COMMIT") {
           using(Git.open(gitdir)) { git =>
             val builder = DirCache.newInCore.builder()
             val inserter = git.getRepository.newObjectInserter()
             val headId = git.getRepository.resolve(Constants.HEAD + "^{commit}")
+
+            if (initOption == "README") {
               val content = if (description.nonEmpty) {
                 name + "\n" +
                   "===============\n" +
@@ -106,6 +108,7 @@ trait RepositoryCreationService {
 
               builder.add(JGitUtil.createDirCacheEntry("README.md", FileMode.REGULAR_FILE,
                 inserter.insert(Constants.OBJ_BLOB, content.getBytes("UTF-8"))))
+            }
             builder.finish()
 
             JGitUtil.createNewCommit(git, inserter, headId, builder.getDirCache.writeTree(inserter),

src/main/twirl/gitbucket/core/account/newrepo.scala.html

@@ -65,6 +65,13 @@ isCreateRepoOptionPublic: Boolean)(implicit context: gitbucket.core.controller.C
             Create an empty repository. You have to initialize by yourself initially.
           </div>
         </label>
+        <label class="radio">
+          <input type="radio" name="initOption" value="EMPTY_COMMIT"/>
+          <span class="strong">Initialize this repository with an empty commit</span>
+          <div class="normal muted">
+            Create an empty repository with empty commit. You can clone the repository immediately.
+          </div>
+        </label>
         <label class="radio">
           <input type="radio" name="initOption" value="README"/>
           <span class="strong">Initialize this repository with a README</span>