Add updater container (spannend hoor)

updater/Dockerfile

@@ -0,0 +1,16 @@
+# Use the official PHP image with Apache
+FROM php:8.1-apache
+
+# Install git and docker-compose
+RUN apt-get update && \
+    apt-get install -y git docker-compose && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy the PHP file to the Apache document root
+COPY webhook.php /var/www/html/index.php
+
+# Expose port 80
+EXPOSE 80
+
+# Start Apache server
+CMD ["apache2-foreground"]