docker build: add env var to disable docker push

docker_build

@@ -45,8 +45,11 @@
   docker tag $registry/$image $registry/$image:$bookmark || { echo 'Tag failed' ; exit 1; }
 done
 
-echo "Pushing docker image"
-docker push $registry/$image || { echo 'Push failed' ; exit 1; }
+# TODO set as an option
+if [ "$ODOO_SCRIPTS_PUSH" != "false" ]; then
+  echo "Pushing docker image"
+  docker push $registry/$image || { echo 'Push failed' ; exit 1; }
+fi
 
 $here/docker_build_clean