Move nginx config to bound directory to allow local config

[Ed McDonagh]

Current setup creates a working webserver, but won’t allow for any SSL certificates or modifications to the timeouts etc.

Propose to have these as a bound directory, or at least good instructions to do so.

[Ed McDonagh]

https://bitbucket.org/openrem/docker/pull-requests/1/issue845editablenginxconf

[Ed McDonagh]

Docs for web server covered by ref #848

[Ed McDonagh]

Nginx now moved into bind folder in docker repo. Fixes #845

→ <<cset 38638d757931>>