hook.beforeEach(function (content) {
                    let mark_imgReg = /!\[(?<alt>[^\]]*)\]\((?<filename>.*?)(?=\"|\))(?<title>\".*\")?\)/g;
                    let mark_img = content.match(mark_imgReg);
                    if (mark_img) {
                        mark_img.forEach(function (item, idx) {
                            console.log(item, idx)
                            let match = mark_imgReg.exec(item);
                            console.log(match)
                            if (match) {
                                if (match.groups.alt) {
                                    content = content.replace(item, `<figure>
<img src="${match.groups.filename}" width="100%" alt="${match.groups.alt}" title = "${match.groups.title}">
    <figcaption>${match.groups.alt}</figcaption>
</figure>`)
                                } else {
                                    content = content.replace(item, `<figure>
<img src="${match.groups.filename}" width="100%" alt="${match.groups.alt}" title = "${match.groups.title}">
</figure>`)
                                }
                            }
                        })
                    }
                })