Added an openldap custom image based on osixia/openldap

pica-openldap/Dockerfile

+FROM osixia/openldap:1.2.4
+MAINTAINER bonnetst@utc.fr
+
+ADD bootstrap /container/service/slapd/assets/config/bootstrap
+ADD certs /container/service/slapd/assets/certs
+ADD environment /container/environment/01-custom

pica-openldap/Makefile

+NAME = pica/openldap
+VERSION = 0.0.1
+
+.PHONY: all build build-nocache
+
+all: build
+
+build:
+	docker build -t $(NAME):$(VERSION) --rm .
+
+build:
+	docker build -t $(NAME):$(VERSION) --no-cache --rm .