enable dnsplugin for network create

when users create a new network and the dnsname plugin can be found by
podman, we will enable container name resolution on the new network.
there is an option to opt *out* as well.

tests cannot be added until we solve the packaging portion of the
dnsname plugin.

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/pkg/network/config.go b/pkg/network/config.go
index 7eaa83833..37eb0dd64 100644
--- a/pkg/network/config.go
+++ b/pkg/network/config.go
@@ -14,6 +14,9 @@ const (
 	// CNIDeviceName is the default network device name and in
 	// reality should have an int appended to it (cni-podman4)
 	CNIDeviceName = "cni-podman"
+	// DefaultPodmanDomainName is used for the dnsname plugin to define
+	// a localized domain name for a created network
+	DefaultPodmanDomainName = "dns.podman"
 )
 
 // GetDefaultPodmanNetwork outputs the default network for podman
@@ -97,3 +100,14 @@ type FirewallConfig struct {
 func (f FirewallConfig) Bytes() ([]byte, error) {
 	return json.MarshalIndent(f, "", "\t")
 }
+
+// DNSNameConfig describes the dns container name resolution plugin config
+type DNSNameConfig struct {
+	PluginType string `json:"type"`
+	DomainName string `json:"domainName"`
+}
+
+// Bytes outputs the configuration as []byte
+func (d DNSNameConfig) Bytes() ([]byte, error) {
+	return json.MarshalIndent(d, "", "\t")
+}