docker中中執行lnmp開發環境，介面報502錯誤進入docker

docker exec -it createID    bash
tailf /var/log/nginx/error.log 

錯誤資訊：

2017/06/26 14:45:14 [crit] 11#11: *21 connect() to unix:/run/php/php7.0-fpm.sock failed (2: No such file or directory) while connecting to upstream, client: 172.19.0.1, server: 127.0.0.1, request: "GET /user/index HTTP/1.1"
 
, upstream: "fastcgi://unix:/run/php/php7.0-fpm.sock:", host: "127.0.0.1"

提示是找不到/run/php/php7.0-fpm.sock檔案，進入/run， 發現只有/run/php7.0-fpm.sock。將docker的nginx配置檔案中的fastcgi_pass配置改成/run/php7.0-fpm.sock，重啟docker即可

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;

        # With php7.0-cgi alone:
        #fastcgi_pass 127.0.0.1:9000;
 

        # With php7.0-fpm:
        fastcgi_pass unix:/run/php7.0-fpm.sock;
    }