遇到个项目需要用到office协作，找了一圈nc比较合适，就开工了
环境：httpd 2.4.5 and later
php7 or later
安装mod_proxy
yum -y install mod_proxy_uwsgi mod_proxy_html
安装docker
yum -y install docker
参考：https://nextcloud.com/collaboraonline/
开始用docker安装collaboraonline，
docker pull collabora/code
这里遇到报错：Using default tag: latest
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
结果是docker服务没启动，跑起来：service docker start
再pull，成功
最后会得到：Status: Downloaded newer image for docker.io/collabora/code:latest
接下来，用你喜欢的方式，创建反向代理，conf文件内容如下：
<VirtualHost *:443>
#ServerName改成collabora服务实际运行的域名，一般和nextcloud不同
ServerName yourfiles.yourdomain.com:443
# SSL configuration, you may want to take the easy route instead and use Lets Encrypt!
SSLEngine on
#签名证书位置
SSLCertificateFile /path/to/signed_certificate
#中间证书位置
SSLCertificateChainFile /path/to/intermediate_certificate
#私钥
SSLCertificateKeyFile /path/to/private/key
SSLProtocol all -SSLv2 -SSLv3
SSLCipherSuite ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS
SSLHonorCipherOrder on
# Encoded slashes need to be allowed
AllowEncodedSlashes NoDecode
# Container uses a unique non-signed certificate
SSLProxyEngine On
SSLProxyVerify None
#下面这2行如果引起报错 ，可以注释掉，测过不影响，因为前面已经禁用SSLProxyVerify，不知道为什么还要画蛇添足
SSLProxyCheckPeerCN Off
SSLProxyCheckPeerName Off
# keep the host
ProxyPreserveHost On
# static html, js, images, etc. served from loolwsd
# loleaflet is the client part of LibreOffice Online
ProxyPass /loleaflet https://127.0.0.1:9980/loleaflet retry=0
ProxyPassReverse /loleaflet https://127.0.0.1:9980/loleaflet
# WOPI discovery URL
ProxyPass /hosting/discovery https://127.0.0.1:9980/hosting/discovery retry=0
ProxyPassReverse /hosting/discovery https://127.0.0.1:9980/hosting/discovery
# Main websocket
ProxyPassMatch "/lool/(.*)/ws$" wss://127.0.0.1:9980/lool/$1/ws nocanon
# Admin Console websocket
ProxyPass /lool/adminws wss://127.0.0.1:9980/lool/adminws
# Download as, Fullscreen presentation and Image upload operations
ProxyPass /lool https://127.0.0.1:9980/lool
ProxyPassReverse /lool https://127.0.0.1:9980/lool
</VirtualHost>然后，就可以把docker跑起来了，先给docker加上开机启动
ckhconfig docker on
再把容器跑起来：
docker run -t -d -p 127.0.0.1:9980:9980 -e ‘domain=nextcloud\\.yourdomain\\.com’ -e “username=username” -e “password=password” –restart always –cap-add MKNOD collabora/code
这里的domain，是nextcloud运行的domain，需要用\\转义.，-p后面绑定在127.0.0.1是为了安全，因为最后是用反向代理对nc使用的，测试期间可以不加ip，就绑定在所有IP了
username和password是指定管理后台的用户名和密码，之前没有指定走了不少弯路，虽然这个后台在正常使用后不会再被用到，配置过程中也其实是不需要用的。
运行后会得到一个容器id，然后netstat看一下
netstat -an|grep 9980
有listening，就可以下一步了
先打开后台，看下有没有什么问题https://yourfiles.yourdomain.com/loleaflet/dist/admin/admin.html
如果登陆后有404，或者任何错误，可能是Apache版本不够高，不支持websock反向代理，自己换Apache吧，最低版本要求是2.4.5或者换nginx
nextcloud的安装就非常简单了，wget到服务器，unzip解包，按流程安装，完
接下来，在应用>office&text中启用Collabora Online
然后到设置》在线协作中，填入之前配置的Collabora Online地址，完工