Remove DNS resolution of *.local in favor of DOCKSAL_DNS_DOMAIN

[gmta]

Currently service-dns resolves all requests to *.local to 127.0.0.1. It would be nice to be able to disable or rename the .local DNS zone.

Use case: we use *.company.local as an internal DNS zone, which conflicts with this service's configuration. As a workaround, we now build a specific DNS container image where we empty out the configuration file for the .local zone.

Suggested fixes:

• Support disabling this zone, e.g. DNS_LOCAL_ZONE_ENABLED=false
• Support renaming this zone, e.g. DNS_LOCAL_ZONE=something-else-entirely
• Leave out this additional zone since there are valid alternatives such as .docksal or localhost to connect to other services.

[gmta]

By the way, I understand that it's not really a smart idea to use an internal DNS zone ending in .local for a multitude of reasons - but it's legacy :-)

[achekulaev]

Docksal provides resolution for .docksal. What is .local?

[gmta]

Please look here:
42b64a7#diff-b958f585a04af5ee2087610ea7180f34R15

[achekulaev]

Whoa!.. @lmakarov do we even need this?

[lmakarov]

.local was added a while ago to support people with "legacies". Those, that did not want to use .docksal and wanted .local instead. I don't think this feature was ever advertised, so it may be fine to remove it. Adding to the next release backlog.

[achekulaev]

@lmakarov got it. Well DOCKSAL_DNS_DOMAIN is configurable for some time now, so those people who need it will be able to use local.