Pull request 1788: 5642-fix-healthcheck-ssl

Merge in DNS/adguard-home from 5642-fix-healthcheck-ssl to master

Updates #5642.
Updates #3290.

Squashed commit of the following:

commit c457ecbc08f58bb4f31bade314dd447832c5bfed
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Mar 27 15:35:32 2023 +0500

    docker: imp docs

commit fddabb95118a85921bf4f50e9b91f4602ba02b0f
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Mar 27 15:18:22 2023 +0500

    docker: skip ssl check

docker/healthcheck.sh

@@ -74,7 +74,13 @@ esac
 
 # Check
 
-wget "$web_url" -O /dev/null -q || exit 1
+# Skip SSL certificate validation since there is no guarantee the container
+# trusts the one used.  It should be safe to drop the SSL validation since the
+# current script intended to be used from inside the container and only checks
+# the endpoint availability, ignoring the content of the response.
+#
+# See https://github.com/AdguardTeam/AdGuardHome/issues/5642.
+wget --no-check-certificate "$web_url" -O /dev/null -q || exit 1
 
 echo "$dns_hosts" | while read -r host
 do

docker/web-bind.awk

@@ -1,23 +1,13 @@
-BEGIN { scheme = "http" }
-
+# Don't consider the HTTPS hostname since the enforced HTTPS redirection should
+# work if the SSL check skipped.  See file docker/healthcheck.sh.
 /^bind_host:/ { host = $2 }
 
 /^bind_port:/ { port = $2 }
 
-/force_https: true$/ { scheme = "https" }
-
-/port_https:/ { https_port = $2 }
-
-/server_name:/ { https_host = $2 }
-
 END {
-    if (scheme == "https") {
-        host = https_host
-        port = https_port
-    }
     if (match(host, ":")) {
-        print scheme "://[" host "]:" port
+        print "http://[" host "]:" port
      } else {
-        print scheme "://" host ":" port
+        print "http://" host ":" port
     }
 }