[DOCKER] Fix dgbuilder

Fix dgbuilder docker container build

Change-Id: I0601bcd807a7d79a01788fb2d021554f013e43ea
Signed-off-by: Timoney, Daniel (dt5972) <dtimoney@att.com>

Former-commit-id: b93e5937498c01c8b1969104a5045d75d9985895
diff --git a/installation/dgbuilder/pom.xml b/installation/dgbuilder/pom.xml
index 953e309..f3940b1 100644
--- a/installation/dgbuilder/pom.xml
+++ b/installation/dgbuilder/pom.xml
@@ -84,7 +84,7 @@
 				<executions>
 					<execution>
 						<id>generate-images</id>
-						<phase>generate-sources</phase>
+						<phase>package</phase>
 						<goals>
 							<goal>build</goal>
 						</goals>
@@ -132,6 +132,20 @@
 				<version>1.5.0</version>
 				<executions>
                     			<execution>
+                        			<id>Make-stage-dir</id>
+                        			<phase>generate-sources</phase>
+                        			<goals>
+                            				<goal>exec</goal>
+                        			</goals>
+                        			<configuration>
+                            				<executable>/bin/mkdir</executable>
+                            				<arguments>
+                                			<argument>-p</argument>
+                                			<argument>${basedir}/target/docker-stage/opt/openecomp/sdnc</argument>
+                            				</arguments>
+                        			</configuration>
+                    			</execution>
+                    			<execution>
                         			<id>Unzip dgbuilder</id>
                         			<phase>generate-sources</phase>
                         			<goals>