First of all i would like to welcome people on this forum as this is my first post. 
Now let’s get to the point.
Technical information:
OS: Ubuntu 16.x
Nextloud: 12.0.3
Collabora appliance: Docker newest image
Webserver: Apache 2.x
SSL Certificate: Own Commercial SSL certificate
Problem Description:
After successfully installation of all appliances, im trying to connect to my collabora files, then i receiving error like below:
Error richdocuments GuzzleHttp\Exception\ConnectException: cURL error 35: error:14077410:SSL
routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure
If im reading this error log properly, Nextcloud is trying to connect over SSL3 but he can’t because my SSL certificate is ussing TLS. I was trying to change ssl settings values in my apache settings to:
SSLProtocolSSL Protocol -ALL +TLSv1 +TLSv1.1 +TLSv1.2
SSLHonorCipherOrder on
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
When this solution didn’t work i was trying to force via php setting adding this line:
$this->curlOption(CURLOPT_SSL_CIPHER_LIST, ‘TLSv1’);
This solution is not working also, somebody have an idea what can i do to resolve this issue ? Im starting to rip off my hairs from head 