Add config to docker, env overrides

etc/godns.conf

@@ -16,7 +16,6 @@ port = 53
 # Semicolon separate multiple files.
 server-list-file = "./etc/apple.china.conf;./etc/google.china.conf"
 resolv-file = "/etc/resolv.conf"
-dns-over-https = "https://cloudflare-dns.com/dns-query"
 timeout = 5  # 5 seconds
 # The concurrency interval request upstream recursive server
 # Match the PR15, https://github.com/kenshinx/godns/pull/15