Hi I m following the instructions in

Question

Hi I m following the instructions in <https towardsdatascience com how to cut your aws ecs costs with fargate spot and prefect 1a1ba5d2e2df|this> great article on using ECS I m now setting up a custom docker image to run dbt I m assuming I can t use `DbtShellTask` because dbt wouldn t have been installed It s coming back with an error where I need to specify a `execution role arn` in the `ECSRun` which I ve now done but can I use the previously defined role or do I need to define something else Thanks

Kevin Kho · Answer

You can just add the dbt library to the image If you don t want to make your own image you can just use the base prefect image and add the env var `EXTRA PIP PACKAGES` which takes in packages to install You can find that <https docs prefect io orchestration flow config docker html installing extra dependencies at runtime|here> only works if you use the base prefect image But could you show me the ECSRun code Just remove sensitive info

Anna Geller · Answer

<https www prefect io blog orchestrating elt on kubernetes with prefect dbt and snowflake part 2 |this post> seems to answer your question

Anna Geller · Answer

the only difference is that this post is using EKS rather than ECS Fargate If you use EKS on Fargate you can follow the above article 1 1 with the only difference that the cluster could be created using the Fargate profile with ` fargate` flag ```eksctl create cluster fargate```

Jonathan Mathews · Answer

Fantastic Thanks both I actually managed to get it working using the initial post I d just skipped a step somehow I also didn t know about the `EXTRA PIP PACKAGES` env var so that s super helpful to know Thanks