Pull request 1836: 5714-handle-zeroes-health

Merge in DNS/adguard-home from 5714-handle-zeroes-health to master

Updates #5714.

Squashed commit of the following:

commit 24faab01faf723e313050294b3a35e249c3cd3e3
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Wed Apr 19 13:10:24 2023 +0300

    docker: add curly brackets

commit 67365d02856200685551a79aa23cf59df4a3484b
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Tue Apr 18 20:16:12 2023 +0300

    docker: imp zeroes check

docker/dns-bind.awk

@@ -7,11 +7,10 @@
         addrs[$2] = true
         prev_line = FNR
 
-        if ($2 == "0.0.0.0" || $2 == "::") {
-            delete addrs
-            addrs["localhost"] = true
-
+        if ($2 == "0.0.0.0" || $2 == "\"\"" || $2 == "'::'") {
             # Drop all the other addresses.
+            delete addrs
+            addrs[""] = true
             prev_line = -1
         }
     }