Add the external volumes just created in the commands to the yaml files

Author: JCombee

build/dist/docker-compose-db8.yml

@@ -1,5 +1,6 @@
 volumes:
   dockerdev-mysql8-volume:
+    external: true
 
 services:
   db8:

build/dist/docker-compose-elasticsearch.yml

@@ -1,3 +1,7 @@
+volumes:
+  dockerdev-elasticsearch7-volume:
+    external: true
+
 services:
   elasticsearch6:
     build:
@@ -6,4 +10,3 @@ services:
         - FROM_TAG=6.5.4
     environment:
       - "discovery.type=single-node"
-

build/dist/docker-compose-elasticsearch7.yml

@@ -1,3 +1,7 @@
+volumes:
+  dockerdev-elasticsearch6-volume:
+    external: true
+
 services:
   elasticsearch7:
     build:
@@ -6,4 +10,3 @@ services:
         - FROM_TAG=7.4.2
     environment:
         - "discovery.type=single-node"
-