Make sure that .next and .next/trace is writable

Had problems deploying because the node process coul not write into
.next/trace. Probably when activatting sourcemaps serverside.
It is not pretty but this makes sure that it is possible.

lagoon/node.dockerfile

@@ -8,4 +8,11 @@ COPY . /app/
 
 EXPOSE 3000
 
-CMD ["/app/lagoon/start.sh"]
+# Desperate I know.
+# This was introduced after continuously getting an error
+# about the .next/trace directory not being writable.
+# TODO: We should investigate how to set proper user/group permissions
+RUN mkdir -p /app/.next/trace
+RUN chmod -R 777 /app/.next
+
+CMD ["/app/lagoon/start.sh"]