JS assets must be generated during start-up as it fails with "Could not load database configuration. No such file" in Dockerfile.

Dockerfile

@@ -21,8 +21,6 @@ RUN apt-get update \
 	&& rm -f /etc/cron.d/* \
 	# Install plugin dependencies \
 	&& bundle check || bundle install \
-	#  (for hourglass plugin) \
-	&& bundle exec rake redmine:plugins:assets RAILS_ENV=production \
 	&& chmod +x /pre-entrypoint.sh \
 	# setting ENTRYPOINT destroys CMD so replace the entrypoint script and call it later \
 	# (see bottom note in https://docs.docker.com/engine/reference/builder/#entrypoint) \

pre-entrypoint.sh

@@ -8,6 +8,9 @@ crontab /etc/cron.d/redmine
 
 service cron start
 
+# For hourglass plugin
+bundle exec rake redmine:plugins:assets RAILS_ENV=production
+
 set -- /orig-entrypoint.sh "$@"
 echo Executing original Redmine "$@"
 exec "$@"