Fix cert deploy

Author: lukehinds

Dockerfile

@@ -76,6 +76,10 @@ RUN chown -R codegate /var/lib/nginx && \
 
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 
+# Ensure directories are writable by the codegate user
+RUN mkdir -p /usr/share/nginx/html/certificates && \
+    chown -R codegate /usr/share/nginx/html/certificates
+
 # Switch to codegate user
 USER codegate
 WORKDIR /app