docker-compose方式升级ghost

修改docker-compose.yml文件里的image版本号，重启docker

[ghost@instance-20210526-1514 ghost]$ cat docker-compose.yml
ghost:
  container_name: ghost
  restart: unless-stopped
  image: ghost:5.30.0 #4.24.0 # 4.5.0
  privileged: true
  net: ghost_net
  volumes:
    - /www/ghost/config.production.json:/var/lib/ghost/config.production.json
    - /www/ghost/content:/var/lib/ghost/content
    - /www/ghost/current/content:/var/lib/ghost/current/content
[ghost@instance-20210526-1514 12]$ docker-compose restart
Restarting ghost ... done

修改模板post文件安装disqus

需要三步：注册disqus拿到shortname，修改post.hbs贴入js脚本，重启ghost搞定！

1. 先注册disqus账号，获得你自己的shortname
   disqus后台地址 https://www.disqus.com/admin/settings/general/
   截图里的shortname等会修改代码时需要用到，其实就是二级域名

2. 修改post.hbs加入disqus脚本

脚本：先来看下disqus脚本示例，其中ce-shi-atbo-ke需要替换为你的shortname

    <section class="article-comments gh-canvas">
        <div id="disqus_thread"></div>
        <script>
            var disqus_config = function () {
                this.page.url = "{{url absolute="true"}}";
                this.page.identifier = "ghost-{{comment_id}}"
            };
            (function() {
            var d = document, s = d.createElement('script');
            s.src = 'https://*****.disqus.com/embed.js';
            s.setAttribute('data-timestamp', +new Date());
            (d.head || d.body).appendChild(s);
            })();
        </script>
    </section>

安装脚本：到你的服务器找，ghost博客的模板文件里有个post.hbs，打开看代码，找到{{comments}}行后面加一段脚本（ghost5.xx是这么安装的），见下文示意

[opc@instance-20210526-1514 ruby]$ pwd
/www/ghost/content/themes/ruby
[opc@instance-20210526-1514 ruby]$ cat post.hbs 
...skip...

    {{> "post-navigation"}}

    {{#if comments}}
        <div class="gh-comments gh-canvas">
            {{comments}}
        </div>
    {{/if}} # ghost 5.0 insert next line from here
    
    <section class="article-comments gh-canvas">
        <div id="disqus_thread"></div>
        <script>
            var disqus_config = function () {
                this.page.url = "{{url absolute="true"}}";
                this.page.identifier = "ghost-{{comment_id}}"
            };
            (function() {
            var d = document, s = d.createElement('script');
            s.src = 'https://ce-shi-atbo-ke.disqus.com/embed.js';
            s.setAttribute('data-timestamp', +new Date());
            (d.head || d.body).appendChild(s);
            })();
        </script>
    </section>

    {{/post}}

    {{#if @custom.show_related_posts}}
        {{> "related-posts"}}
    {{/if}}

</main>

3. 重启ghost的docker，脚本生效，评论功能有了

[ghost@instance-20210526-1514 12]$ docker-compose restart
Restarting ghost ... done

效果见截图，但disqus的资源，试了下貌似要翻墙才能加载出来……