diff --git a/containers/zammad/docker-entrypoint.sh b/containers/zammad/docker-entrypoint.sh
index b37344f..4a36d6f 100755
--- a/containers/zammad/docker-entrypoint.sh
+++ b/containers/zammad/docker-entrypoint.sh
@@ -7,6 +7,7 @@ set -e
 : "${ELASTICSEARCH_PORT:=9200}"
 : "${ELASTICSEARCH_SCHEMA:=http}"
 : "${ELASTICSEARCH_SSL_VERIFY:=true}"
+: "${ELASTICSEARCH_PURGE:=false}"
 : "${MEMCACHED_HOST:=zammad-memcached}"
 : "${MEMCACHED_PORT:=11211}"
 : "${POSTGRESQL_HOST:=zammad-postgresql}"
@@ -98,6 +99,12 @@ if [ "$1" = 'zammad-init' ]; then
   else
     SSL_SKIP_VERIFY=""
   fi
+  
+  if [ "${ELASTICSEARCH_PURGE}" == "true" ]; then
+     echo "deleting all es indicies..."
+     curl -XDELETE ${SSL_SKIP_VERIFY} ${ELASTICSEARCH_SCHEMA}://${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}/*
+  fi
+  
   if ! curl -s ${SSL_SKIP_VERIFY} ${ELASTICSEARCH_SCHEMA}://${ELASTICSEARCH_HOST}:${ELASTICSEARCH_PORT}/_cat/indices | grep -q zammad; then
     echo "rebuilding es searchindex..."
     bundle exec rake searchindex:rebuild