Add build

• https://blog.packagecloud.io/debian/debuild/packaging/2015/06/08/buildling-deb-packages-with-debuild/
• https://git.ethitter.com/debian/nginx-build
• https://bitworks.software/en/2018-09-16-gitlab-ci-artifacts-deb-build-primer.html
• https://github.com/theinvisible/openfortigui/blob/master/openfortigui/debian/rules
• https://www.sidorenko.io/post/2016/05/a-short-way-to-a-deb-package/
• http://forums.debian.net/viewtopic.php?f=30&t=129632
  • debuild -uc -us --source-option=--include-binaries --source-option=-isession
  • http://stackoverflow.com/questions/9677971/having-trouble-building-python-deb-package-complain-about-modified-binary

source/Makefile

 # Relies on latest binary build artifact from https://git.ethitter.com/debian/nginx-build.
 get_binary:
-	curl -o fakeroot/usr/sbin/nginx "$NGINX_BINARY"
+	curl -o fakeroot/usr/sbin/nginx $NGINX_BINARY
 
 install: get_binary
 	install fakeroot/etc/default/nginx /etc/default/nginx