Fixup envsubst install on `alpine-fat`

Add amzn2 upstream flavor based on centos

Remove `VOLUME` directive and just `mkdir /var/run/openresty` (openre…

…sty#128)

Release 1.15.8.2-4 and update AUTHORS

don't move temp dirs for windows

Backout logging changes (openresty#119)

Release version 1.15.8.1-4

Fix Travis no-sse42 builds

Fix Windows image build and pin to 2016. Appveyor/Travis improvements

Fixed an error caused by '"' in executing apt (openresty#95)