Add more operation document

Author: k0kubun

README.md

@@ -98,6 +98,12 @@ https://rubybench.org/admin/repos/ruby
 
 Pattern: "all" is replaced with "", and any other string can filter benchmarks.
 
+### Run rake task
+
+```bash
+docker exec -it [container-id] sudo -E -u rubybench bundle exec rake oneshot:xxx
+```
+
 ### Run rails console
 
 ```bash
@@ -119,6 +125,12 @@ bundle exec rake db:drop db:create RAILS_ENV=development DISABLE_DATABASE_ENVIRO
 cat /tmp/dump.sql | psql -U rubybench ruby-bench-web_development
 ```
 
+### Update ruby-bench-web repository in container
+
+```bash
+/var/docker/launcher rebuild rubybench
+```
+
 ## Deployment
 
 ### ruby-bench-web