Env: Add XRAY_LOCATION_CERT variable (#4536)

https://github.com/XTLS/Xray-core/issues/4531#issuecomment-2746155941

Fixes https://github.com/XTLS/Xray-core/issues/4531

---------

Co-authored-by: RPRX <63339210+RPRX@users.noreply.github.com>

transport/internet/tls/config.go

@@ -109,12 +109,12 @@ func setupOcspTicker(entry *Certificate, callback func(isReloaded, isOcspstaplin
 		for {
 			var isReloaded bool
 			if entry.CertificatePath != "" && entry.KeyPath != "" {
-				newCert, err := filesystem.ReadFile(entry.CertificatePath)
+				newCert, err := filesystem.ReadCert(entry.CertificatePath)
 				if err != nil {
 					errors.LogErrorInner(context.Background(), err, "failed to parse certificate")
 					return
 				}
-				newKey, err := filesystem.ReadFile(entry.KeyPath)
+				newKey, err := filesystem.ReadCert(entry.KeyPath)
 				if err != nil {
 					errors.LogErrorInner(context.Background(), err, "failed to parse key")
 					return