Asset pre-generation fails with db yml. Move it back to the Dockerfile.

Dockerfile

@@ -21,6 +21,15 @@ RUN apt-get update \
 	&& rm -f /etc/cron.d/* \
 	# Install plugin dependencies \
 	&& bundle check || bundle install \
+	#   For hourglass plugin \
+	#   fill up "database.yml" with bogus entries so the redmine Gemfile will pre-install all database adapter dependencies \
+	echo '# the following entries only exist to force `bundle install` to pre-install all database adapter dependencies -- they can be safely removed/ignored' > ./config/database.yml && \
+	for adapter in mysql2 postgresql sqlserver sqlite3; do \
+		echo "$adapter:" >> ./config/database.yml; \
+		echo "  adapter: $adapter" >> ./config/database.yml; \
+	done; \
+	&& bundle exec rake redmine:plugins:assets RAILS_ENV=production \
+	&& rm ./config/database.yml \
 	&& 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

@@ -8,9 +8,6 @@ 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 "$@"