Fix #1274 - various nginx batch improvements #932

Job	Run time
build-docker (internet.nl, docker/Dockerfile, app)	1m 29s
build-docker (unbound, docker/Dockerfile, unbound)	57s
build-docker (linttest, docker/Dockerfile, linttest)	3m 1s
build-docker (test-runner, docker/test-runner.Dockerfile)	1m 34s
build-docker (webserver, docker/webserver.Dockerfile)	1m 2s
build-docker (grafana, docker/grafana.Dockerfile)	1m 8s
build-docker (cron, docker/cron.Dockerfile)	54s
integration-test	2m 55s
development-environment-test	2m 14s
docs	1s
lint/check	47s
test	2m 14s
	18m 16s

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