Global default branch setting (#11918) (#11937)

* Global default branch setting (#11918)

* Global default branch setting

* add to app.ini example per @silverwind

* update per @lunny

Co-authored-by: John Olheiser <john.olheiser@gmail.com>

* Update modules/setting/repository.go

Co-authored-by: John Olheiser <john.olheiser@gmail.com>

custom/conf/app.ini.sample

 DEFAULT_REPO_UNITS = repo.code,repo.releases,repo.issues,repo.pulls,repo.wiki
 ; Prefix archive files by placing them in a directory named after the repository
 PREFIX_ARCHIVE_FILES = true
+; The default branch name of new repositories
+DEFAULT_BRANCH=master
 
 [repository.editor]
 ; List of file extensions for which lines should be wrapped in the Monaco editor

docs/content/doc/advanced/config-cheat-sheet.en-us.md

 - `ENABLE_PUSH_CREATE_USER`:  **false**: Allow users to push local repositories to Gitea and have them automatically created for a user.
 - `ENABLE_PUSH_CREATE_ORG`:  **false**: Allow users to push local repositories to Gitea and have them automatically created for an org.
 - `PREFIX_ARCHIVE_FILES`: **true**: Prefix archive files by placing them in a directory named after the repository.
+- `DEFAULT_BRANCH`: **master**: Default branch name of all repositories.
 
 ### Repository - Pull Request (`repository.pull-request`)
 

modules/repository/init.go

 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/mcuadros/go-version"
 	"github.com/unknwon/com"
 	}
 
 	if len(defaultBranch) == 0 {
-		defaultBranch = "master"
+		defaultBranch = setting.Repository.DefaultBranch
 	}
 
 	if stdout, err := git.NewCommand("push", "origin", "master:"+defaultBranch).

modules/setting/repository.go

 		DisabledRepoUnits                       []string
 		DefaultRepoUnits                        []string
 		PrefixArchiveFiles                      bool
+		DefaultBranch                           string
 
 		// Repository editor settings
 		Editor struct {
 	Repository.DisableHTTPGit = sec.Key("DISABLE_HTTP_GIT").MustBool()
 	Repository.UseCompatSSHURI = sec.Key("USE_COMPAT_SSH_URI").MustBool()
 	Repository.MaxCreationLimit = sec.Key("MAX_CREATION_LIMIT").MustInt(-1)
+	Repository.DefaultBranch = sec.Key("DEFAULT_BRANCH").MustString("master")
 	RepoRootPath = sec.Key("ROOT").MustString(path.Join(homeDir, "gitea-repositories"))
 	forcePathSeparator(RepoRootPath)
 	if !filepath.IsAbs(RepoRootPath) {

routers/repo/repo.go

 	ctx.Data["readme"] = "Default"
 	ctx.Data["private"] = getRepoPrivate(ctx)
 	ctx.Data["IsForcedPrivate"] = setting.Repository.ForcePrivate
+	ctx.Data["default_branch"] = setting.Repository.DefaultBranch
 
 	ctxUser := checkContextUser(ctx, ctx.QueryInt64("org"))
 	if ctx.Written() {

templates/repo/create.tmpl

 						</div>
 						<div class="inline field">
 							<label for="default_branch">{{.i18n.Tr "repo.default_branch"}}</label>
-							<input id="default_branch" name="default_branch" value="{{.default_branch}}" placeholder="master">
+							<input id="default_branch" name="default_branch" value="{{.default_branch}}" placeholder="{{.default_branch}}">
 						</div>
 					</div>
 

templates/repo/empty.tmpl

 								<div class="markdown">
 									<pre><code>touch README.md
 git init
+{{if ne .Repository.DefaultBranch "master"}}git branch -m master {{.Repository.DefaultBranch}}{{end}}
 git add README.md
 git commit -m "first commit"
 git remote add origin <span class="clone-url">{{if $.DisableSSH}}{{$.CloneLink.HTTPS}}{{else}}{{$.CloneLink.SSH}}{{end}}</span>
-git push -u origin {{if ne .Repository.DefaultBranch "master"}}master:{{.Repository.DefaultBranch}}{{else}}master{{end}}</code></pre>
+git push -u origin {{.Repository.DefaultBranch}}</code></pre>
 								</div>
 							</div>
 							<div class="ui divider"></div>