hello, all! I can confirm that using the xdebug.remote_host={{ host ip address }} works for xdebug. after a few hours tryng every possible combination this is what started working 
For what itâs worth, hereâs how I finally got my setup working with Docker for Windows (Hyper-V):
- In a Windows command-line, run âipconfigâ and look for the IP4 address in âDockerNATâ entry. 192.168.246.1 in my case
- Set âxdebug.remote_host=192.168.246.1â in xdebug.ini file
- Do NOT set âxdebug.remote_connect_backâ (or you could explicitly set âxdebug.remote_connect_back=0â)
That last step is what drove me crazy for a few days. I had remote_connect_back=1 set from a previous build. I thought that setting âremote_host=xxxxxâ would override connect_back, so I didnât think to turn it off. It even worked for the Docker Toolbox version.
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Here are some more general instructions regardless of Docker (Linux, Windows, Mac, Toolbox):
https://devilbox.readthedocs.io/en/latest/intermediate/configure-php-xdebug.html