diff --git a/Makefile b/Makefile
index ab112584c65f4..3b1544184a732 100644
--- a/Makefile
+++ b/Makefile
@@ -660,7 +660,9 @@ docs:
 	@hash hugo > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
 		curl -sL https://github.com/gohugoio/hugo/releases/download/v0.74.3/hugo_0.74.3_Linux-64bit.tar.gz | tar zxf - -C /tmp && mv /tmp/hugo /usr/bin/hugo && chmod +x /usr/bin/hugo; \
 	fi
-	cd docs; make trans-copy clean build-offline;
+	git fetch origin;
+	git clone -b release/v1.15 ./ /tmp/gitea-docs-v1.15;
+	cd /tmp/gitea-docs-v1.15 && make docs;
 
 .PHONY: deps
 deps: deps-frontend deps-backend
diff --git a/build/generate-docs.go b/build/generate-docs.go
new file mode 100644
index 0000000000000..d7f31939406fe
--- /dev/null
+++ b/build/generate-docs.go
@@ -0,0 +1,218 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// Copyright (c) 2015, Wade Simmons
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+// generate-docs generates documents from markdown files in docs/
+
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"archive/tar"
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/hashicorp/go-version"
+)
+
+func dlThemeFile(dir string) error {
+	resp, err := http.Get("https://dl.gitea.io/theme/master.tar.gz")
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	themePath := filepath.Join(dir, "theme.tar.gz")
+	f, err := os.Create(themePath)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	if _, err = io.Copy(f, resp.Body); err != nil {
+		return err
+	}
+	f.Close()
+
+	f2, err := os.Open(themePath)
+	if err != nil {
+		return err
+	}
+	defer f2.Close()
+
+	dstPath := filepath.Join(dir, "gitea")
+
+	// gzip read
+	gr, err := gzip.NewReader(f2)
+	if err != nil {
+		return err
+	}
+	defer gr.Close()
+
+	// tar read
+	tr := tar.NewReader(gr)
+
+	// 读取文件
+	for {
+		h, err := tr.Next()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+		if h.FileInfo().IsDir() {
+			continue
+		}
+		if err := os.MkdirAll(filepath.Join(dstPath, path.Dir(h.Name)), os.ModePerm); err != nil {
+			return err
+		}
+
+		// 打开文件
+		fw, err := os.Create(filepath.Join(dstPath, h.Name))
+		if err != nil {
+			return err
+		}
+		defer fw.Close()
+
+		// 写文件
+		_, err = io.Copy(fw, tr)
+		if err != nil {
+			return err
+		}
+		fw.Close()
+	}
+	return nil
+}
+
+func main() {
+	curDir, err := os.Getwd()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println("Current directory is", curDir)
+	tmpDir := os.TempDir()
+	distDir, err := os.MkdirTemp(tmpDir, "gitea-docs-dist")
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println("Dist directory is", distDir)
+
+	fmt.Println("Fetching origin branches")
+	cmd := exec.Command("git", "fetch", "origin")
+	cmd.Dir = curDir
+	if err := cmd.Run(); err != nil {
+		log.Fatal(err)
+	}
+	releaseBranches, err := fetchAllReleasesBranches(curDir)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Printf("Found %d branches\n", len(releaseBranches))
+	workspaceDir, err := os.MkdirTemp(tmpDir, "gitea-docs-workspace")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err = dlThemeFile(workspaceDir); err != nil {
+		log.Fatal(err)
+	}
+
+	for _, releaseVersion := range releaseBranches {
+		if err := genearteOneVersion(workspaceDir, curDir, distDir, releaseVersion); err != nil {
+			log.Fatal(err)
+		}
+	}
+}
+
+var minDocVersion, _ = version.NewVersion("v1.16")
+
+func fetchAllReleasesBranches(curDir string) ([]string, error) {
+	var output bytes.Buffer
+	var stderr strings.Builder
+	cmd := exec.Command("git", "branch", "-r", "--list", "origin/release/*")
+	cmd.Dir = curDir
+	cmd.Stdout = &output
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return nil, fmt.Errorf("%v - %v", err, stderr.String())
+	}
+	var branches []string
+	scanner := bufio.NewScanner(&output)
+
+	for scanner.Scan() {
+		branch := strings.TrimPrefix(strings.TrimSpace(scanner.Text()), "origin/release/")
+		ver, _ := version.NewVersion(branch)
+		if ver.LessThan(minDocVersion) {
+			continue
+		}
+
+		branches = append(branches, branch)
+	}
+
+	sort.Slice(branches, func(i, j int) bool {
+		a, _ := version.NewVersion(branches[i])
+		b, _ := version.NewVersion(branches[j])
+		return a.LessThan(b)
+	})
+
+	return branches, nil
+}
+
+func genearteOneVersion(workspaceDir, gitDir, distDir, releaseVersion string) error {
+	curVerDir := filepath.Join(workspaceDir, releaseVersion)
+	fmt.Printf("Genera branch %s in %s\n", releaseVersion, curVerDir)
+
+	distSubDir := filepath.Join(distDir, releaseVersion)
+
+	var stderr strings.Builder
+	cmd := exec.Command("git", "clone", "-b", "release/"+releaseVersion, gitDir, releaseVersion)
+	cmd.Dir = workspaceDir
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("%v - %v", err, stderr.String())
+	}
+
+	stderr.Reset()
+	// hugo  $(PUBLIC)
+	cmd = exec.Command("make", `clean`, "trans-copy")
+	cmd.Dir = filepath.Join(curVerDir, "docs")
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("%v - %v", err, stderr.String())
+	}
+
+	if err := os.MkdirAll(filepath.Join(curVerDir, "docs", "themes", "gitea"), os.ModePerm); err != nil {
+		return err
+	}
+
+	stderr.Reset()
+	cmd = exec.Command("cp", `-r`, filepath.Join(workspaceDir, "gitea"), filepath.Join(curVerDir, "docs", "themes", "gitea"))
+	cmd.Dir = filepath.Join(curVerDir, "docs")
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("%v - %v", err, stderr.String())
+	}
+
+	stderr.Reset()
+	cmd = exec.Command("hugo", `--baseURL="/"`, "--cleanDestinationDir", "--destination="+distSubDir)
+	cmd.Dir = filepath.Join(curVerDir, "docs")
+	cmd.Stderr = &stderr
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("%v - %v", err, stderr.String())
+	}
+	return nil
+}
diff --git a/docs/Makefile b/docs/Makefile
index 68afe03e75fe0..f5da24e7b47ec 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -1,6 +1,17 @@
 THEME := themes/gitea
-PUBLIC := public
 ARCHIVE := https://dl.gitea.io/theme/master.tar.gz
+BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
+DOC_VERSION := $(shell git describe --tags --always | sed 's/-/+/' | sed 's/^v//')
+MAIN_BRANCH := main
+
+ifeq ($(BRANCH), $(MAIN_BRANCH))
+	DOC_VERSION := $(MAIN_BRANCH)
+	PUBLIC := public
+	BASE_PATH := /
+endif
+
+PUBLIC := public/$(DOC_VERSION)
+BASE_PATH := /$(DOC_VERSION)/
 
 .PHONY: all
 all: build
@@ -19,11 +30,11 @@ server: $(THEME)
 
 .PHONY: build
 build: $(THEME)
-	hugo --cleanDestinationDir
+	hugo --cleanDestinationDir --destination=$(PUBLIC)
 
 .PHONY: build-offline
 build-offline: $(THEME)
-	hugo --baseURL="/" --cleanDestinationDir
+	hugo --baseURL="$(BASE_PATH)" --destination=$(PUBLIC) --cleanDestinationDir
 
 .PHONY: update
 update: $(THEME)
diff --git a/docs/content/doc/advanced/hacking-on-gitea.zh-cn.md b/docs/content/doc/developers/hacking-on-gitea.zh-cn.md
similarity index 100%
rename from docs/content/doc/advanced/hacking-on-gitea.zh-cn.md
rename to docs/content/doc/developers/hacking-on-gitea.zh-cn.md