diff --git a/ontrack-delivery/Operations.md b/ontrack-delivery/Operations.md
index 67abf313887..a9136f2551b 100644
--- a/ontrack-delivery/Operations.md
+++ b/ontrack-delivery/Operations.md
@@ -178,7 +178,7 @@ In all cases, you'll have the following structure:
 
 4. Start and connect to the `ontrack-data` volumes:
 
-    docker run -it --volumes-from ontrack-data ubuntu:14.04 /bin/bash
+    docker run -it --volumes-from ontrack-data --volume /root/migration:/migration ubuntu:14.04 /bin/bash
 
 5. And execute the following commands:
 
@@ -189,7 +189,7 @@ In all cases, you'll have the following structure:
 
 6. Clean the container list
 
-    docker rm $(docker ps -l | grep ubuntu  | awk "{print \$1}")
+    docker rm $(docker ps -l | grep ubuntu  | awk '{print $1}')
 
 7. Remove the `ontrack` old container:
 
@@ -197,13 +197,13 @@ In all cases, you'll have the following structure:
 
 8. Recreate the `ontrack` container from your favourite version:
 
-    docker run -d --name ontrack-<version> --volumes-from ontrack-data nemerosa/ontrack:<version>
+    docker run -d --name ontrack-$VERSION --volumes-from ontrack-data nemerosa/ontrack:$VERSION
 
 9. Recreate the Nginx container:
 
     docker run -d \
         --publish 443:443 \
-        --link ontrack-<version>:ontrack \
+        --link ontrack-$VERSION:ontrack \
         --volume /root/nginx/certs:/etc/nginx/certs \
         --volume /root/nginx/sites-enabled:/etc/nginx/sites-enabled \
         dockerfile/nginx
diff --git a/ontrack-delivery/production-update.sh b/ontrack-delivery/production-update.sh
index e967dee1ff5..bafb699a5c8 100755
--- a/ontrack-delivery/production-update.sh
+++ b/ontrack-delivery/production-update.sh
@@ -57,25 +57,37 @@ echo "[PRODUCTION] Version         = ${VERSION}"
 
 # Removes the Nginx container
 
-NGINX_CID=`docker ps | grep "dockerfile/nginx" | awk "{print \$1}"`
-docker stop ${NGINX_CID}
-docker rm ${NGINX_CID}
+echo "[PRODUCTION] Stopping Nginx container..."
+NGINX_CID=`docker ps | grep "dockerfile/nginx" | awk '{print $1}'`
+if [ "${NGINX_CID}" != "" ]
+then
+	docker stop ${NGINX_CID}
+	docker rm ${NGINX_CID}
+fi
 
 # Stops the old version of Ontrack
 
-docker stop $(docker ps docker ps | grep "nemerosa/ontrack" | awk "{print \$1}")
+echo "[PRODUCTION] Stopping Ontrack container..."
+ONTRACK_CID=`docker ps docker ps | grep "nemerosa/ontrack" | awk '{print $1}'`
+if [ "${ONTRACK_CID}" != "" ]
+then
+	docker stop ${ONTRACK_CID}
+fi
 
 # Backup of the data
 
+echo "[PRODUCTION] Backuping Ontrack data..."
 TIMESTAMP=`date +%F-%T`
 docker run --volumes-from ontrack-data --volume /root:/backup ubuntu tar czvf /backup/backup-${TIMESTAMP}.tgz /opt/ontrack/mount
 
 # Installs the new version of Ontrack
 
+echo "[PRODUCTION] Starting new Ontrack version ${VERSION}..."
 docker run -d --name ontrack-${VERSION} --volumes-from ontrack-data nemerosa/ontrack:${VERSION}
 
 # Recreate the Nginx container:
 
+echo "[PRODUCTION] Starting the Nginx proxy container..."
 docker run -d \
     --publish 443:443 \
     --link ontrack-${VERSION}:ontrack \
@@ -83,4 +95,5 @@ docker run -d \
     --volume /root/nginx/sites-enabled:/etc/nginx/sites-enabled \
     dockerfile/nginx
 
-# End
\ No newline at end of file
+# End
+echo "[PRODUCTION] End of deployment."