Make apache vhost config 12 factor friendly

[michaelmcandrew]

Hey there,

https://12factor.net/logs stats that you should treat logs as streams.

In the Docker apache image this is achieved by symlinking the apache log files to /dev/stderr and /dev/stdout` see this comment for more details.

By default amp defines its own log files for each site, which overrides the Docker config.

I know that amp isn't primarily aimed at Docker, and that https://12factor.net/logs is not the final word on app design, but I wanted to draw your attention to this in case you had any thoughts / it was helpful in thinking about how amp is designed.

It's not a blocker and I have got round it in the CiviCRM Docker image with a custom apache vhost template michaelmcandrew/civicrm-buildkit-docker@65a0971 (pending this PR).

[totten]

@michaelmcandrew I've merged the change to have buildkit download amp v0.4.4.

I think it's pretty reasonable for civicrm-buildkit-docker to have a few small differences in how it generates vhost templates (compared to stock/local amp), so overriding apache24-vhost.php makes sense.

[michaelmcandrew]

Cool. Sounds good, thanks.