diff --git a/README.md b/README.md
index 6151728..fc0a6a0 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,15 @@ For offline Installtion,where theres no Intenet acess,
 1. Move to directory of the Unziped OpenELIS-Global Docker Installer file 
 
        cd OpenELIS-Global_<verion>_docker_installer
-1. Load the images and start the containers  by running 
+
+1. For installing OpenELIS-Global2 the first time ,Load the images and start the containers  by running 
 
        ./run.sh
 
+1. For Upgrading  OpenELIS-Global2 with an existing docker installer ,only Load the images in the new docker installer and re-satrt Global Global containers in your existing old Docker  installer
+
+      ./upgrade.sh
+
+       
+    
 
diff --git a/build.sh b/build.sh
index a002784..19dbcf6 100755
--- a/build.sh
+++ b/build.sh
@@ -29,6 +29,7 @@ createLinuxInstaller() {
     mkdir -p ${INSTALLER_CREATION_DIR}/${installerName}/dockerImage
     mkdir -p ${INSTALLER_CREATION_DIR}/${installerName}/volumes
     cp ./install/run.sh ${INSTALLER_CREATION_DIR}/${installerName}/run.sh
+    cp ./install/upgrade.sh ${INSTALLER_CREATION_DIR}/${installerName}/upgrade.sh
     cp docker-compose.yml ${INSTALLER_CREATION_DIR}/${installerName}/docker-compose.yml
     cp -r volumes/* ${INSTALLER_CREATION_DIR}/${installerName}/volumes
     cp OpenELIS-Global_DockerImage.tar.gz ${INSTALLER_CREATION_DIR}/${installerName}/dockerImage/OpenELIS-Global_DockerImage.tar.gz
diff --git a/docker-compose.yml b/docker-compose.yml
index c51372d..207cada 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -51,7 +51,7 @@ services:
             - ./volumes/database/database.env
         volumes:
               # preserves the database between containers
-            - db-data:/var/lib/postgresql/data                
+            - ./volumes/database/data:/var/lib/postgresql/data                
               # files here will run on install
             - ./volumes/database/dbInit:/docker-entrypoint-initdb.d
         logging: *local-logging    
diff --git a/install/upgrade.sh b/install/upgrade.sh
new file mode 100755
index 0000000..118b4ae
--- /dev/null
+++ b/install/upgrade.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+cd dockerImage
+gunzip -c OpenELIS-Global_DockerImage.tar.gz | docker load
+gunzip -c Postgres_DockerImage.tar.gz | docker load
+gunzip -c JPAServer_DockerImage.tar.gz | docker load
+gunzip -c AutoHeal_DockerImage.tar.gz | docker load
+gunzip -c NGINX_DockerImage.tar.gz | docker load
+gunzip -c ReactFrontend_DockerImage.tar.gz | docker load
+gunzip -c Certs_DockerImage.tar.gz | docker load
+
+
+