Set custom DNS servers, search domains, and resolver options for a Docker Compose service (dns, dns_search, dns_opt)

domain: compose-spec/compose-spec 05-services.md (dns) · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗

Documented steps

  1. Under a service, set `dns:` to a single IP or a list of custom DNS server IPs for name resolution.
  2. Add `dns_search:` to set custom search domains (single value or list) appended to short names.
  3. Add `dns_opt:` to pass resolver options to the container DNS config (Linux: written to /etc/resolv.conf, e.g. use-vc, no-tld-query).
  4. Recreate the service with `docker compose up -d` so the new DNS config takes effect.
  5. Docs: https://github.com/compose-spec/compose-spec/blob/master/05-services.md#dns

Known gotchas

Related routes

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