+#function to load sftp servers keys to dfc app depending on KNOWN_HOSTS environment variable
+# when KNOWN_HOSTS == "all_hosts_keys" or is not set, public keys of all sftp servers are loaded
+# when KNOWN_HOSTS == "known_hosts_empty", empty known hosts file is created
+# for other strings known hosts file is not created
+function load-sftp-servers-keys() {
+ if [ -z "$KNOWN_HOSTS" ] || [ "$KNOWN_HOSTS" == "all_hosts_keys" ]; then
+ SFTP_SERVERS="$(docker ps -q --filter='name=dfc_sftp')"