thank you for helping.
on host machine didn’t work DNS-query
dig NS tut.by @8.8.8.8
; <<>> DiG 9.11.3-1ubuntu1-Ubuntu <<>> NS tut.by @8.8.8.8
;; global options: +cmd
;; connection timed out; no servers could be reached
I took ip address from networking interface and add to docker settings
dig NS tut.by @172.30.0.55
; <<>> DiG 9.11.3-1ubuntu1-Ubuntu <<>> NS tut.by @172.30.0.55
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10382
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;tut.by. IN NS
;; ANSWER SECTION:
tut.by. 60 IN NS ns1.hosterby.com.
tut.by. 60 IN NS ns2.hosterby.com.
;; Query time: 48 msec
;; SERVER: 172.30.0.55#53(172.30.0.55)
;; WHEN: Mon Apr 30 09:04:58 UTC 2018
;; MSG SIZE rcvd: 83