cAdvisor + Docker Compose guide
Signed-off-by: lucperkins <lucperkins@gmail.com>

* Fix spelling error and add scrape_interval to example config
Signed-off-by: lucperkins <lucperkins@gmail.com>

* Remove note block
Signed-off-by: lucperkins <lucperkins@gmail.com>

* Add new example expressions
Signed-off-by: lucperkins <lucperkins@gmail.com>

* Add new metrics to the table
Signed-off-by: lucperkins <lucperkins@gmail.com>