TZ setting shown at start (#119)

internal/params/params.go

@@ -28,9 +28,10 @@ type ParamsReader interface {
 	GetDNSOverTLSPrivateAddresses() (privateAddresses []string)
 	GetDNSOverTLSIPv6() (ipv6 bool, err error)
 
-	// IDs
+	// System
 	GetUID() (uid int, err error)
 	GetGID() (gid int, err error)
+	GetTimezone() (timezone string, err error)
 
 	// Firewall getters
 	GetExtraSubnets() (extraSubnets []net.IPNet, err error)

internal/params/system.go

@@ -13,3 +13,8 @@ func (p *paramsReader) GetUID() (uid int, err error) {
 func (p *paramsReader) GetGID() (gid int, err error) {
 	return p.envParams.GetEnvIntRange("GID", 0, 65535, libparams.Default("1000"))
 }
+
+// GetTZ obtains the timezone from the environment variable TZ
+func (p *paramsReader) GetTimezone() (timezone string, err error) {
+	return p.envParams.GetEnv("TZ")
+}