created docker-prometheus compose file and edited the Prometheus yml file

prom/.build/Makefile

@@ -0,0 +1,21 @@
+# Copyright 2013 Prometheus Team
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+.SUFFIXES:
+
+include ../Makefile.INCLUDE
+
+all:
+
+clean:
+	$(MAKE) -C root clean