Add HTTPS support with self-signed certificates for internal domain

- Add HTTPS blocks for digiserver.sibiusb.harting.intra with internal TLS
- Add HTTPS support for IP address 10.76.152.164
- Add catch-all HTTPS handler with self-signed certificate
- Fixes connection refused error on port 443

Caddyfile

@@ -49,12 +49,30 @@ http://digiserver.sibiusb.harting.intra {
     import reverse_proxy_config
 }
 
-# Handle IP address access
+# Internal domain (HTTPS - self-signed certificate)
+https://digiserver.sibiusb.harting.intra {
+    import reverse_proxy_config
+    tls internal
+}
+
+# Handle IP address access (HTTP)
 http://10.76.152.164 {
     import reverse_proxy_config
 }
 
+# Handle IP address access (HTTPS - self-signed)
+https://10.76.152.164 {
+    import reverse_proxy_config
+    tls internal
+}
+
 # Catch-all for any other HTTP requests
 http://* {
     import reverse_proxy_config
 }
+
+# Catch-all for any other HTTPS requests
+https://* {
+    import reverse_proxy_config
+    tls internal
+}