diff --git a/duckdns/cronjob b/duckdns/cronjob
new file mode 100644
index 0000000..40fa268
--- /dev/null
+++ b/duckdns/cronjob
@@ -0,0 +1 @@
+*/30 * * * * /app/dns/update_duckdns.sh
\ No newline at end of file
diff --git a/duckdns/update_duckdns.sh b/duckdns/update_duckdns.sh
new file mode 100644
index 0000000..0296643
--- /dev/null
+++ b/duckdns/update_duckdns.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+
+IP=$(ip addr show wlan0 | grep 'inet ' | awk '{print $2}' | cut -d'/' -f1)
+curl -s 'https://www.duckdns.org/update?domains=<DOMAIN>&token=<TOKEN>&ip='$IP
\ No newline at end of file
diff --git a/webservice/Dockerfile.txt b/webservice/Dockerfile.txt
index aff37c9..ae089ce 100644
--- a/webservice/Dockerfile.txt
+++ b/webservice/Dockerfile.txt
@@ -16,7 +16,7 @@ RUN pip3 install pipenv
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Expose port
-EXPOSE 8080
+EXPOSE 8443
 
 # Imort script
 COPY webservice.py .
@@ -27,4 +27,4 @@ COPY certs/key.pem .
 COPY certs/cert.pem .
 
 # Start app
-CMD ["uvicorn", "webservice:app", "--host", "0.0.0.0", "--port", "8080", "--ssl-keyfile=key.pem", "--ssl-certfile=cert.pem"]
\ No newline at end of file
+CMD ["uvicorn", "webservice:app", "--host", "0.0.0.0", "--port", "8443", "--ssl-keyfile=key.pem", "--ssl-certfile=cert.pem"]
\ No newline at end of file