PHRAS-3403 set docker containers resource limits #697

Job	Run time
build phraseanet-worker / build	3m 31s
build phraseanet-setup / build	3m 30s
build phraseanet-db / build	22s
build phraseanet-elasticsearch / build	20s
build phraseanet-fpm / build	3m 24s
build phraseanet-nginx / build	2m 41s
unit test	9m 51s
	23m 39s

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