Is it normal for files to be written to S3 when a deployment is built? Or are they supposed to be written there when the deployment is applied? This is what I'm seeing:

$ prefect deployment build run.py:main         -n jack-test-3         -ib ecs-task/ecs-block         -sb s3/flow-storage-block         --pool some-pool   --override env.EXTRA_PIP_PACKAGES='prefect-aws s3fs'
Found flow 'main'
Deployment YAML created at 'V:\some-dir\ecs-test-3\main-deployment.yaml'.
Successfully uploaded 2 files to <s3://some-bucket/some-path/>

I think that's normal unless you use the

--skip-upload

flag.

build

preps the deployment YAML and uploads your files to storage, then

apply

registers the deployment via the Prefect API. You can also do it all in one go by adding the

--apply

flag to your

build

command. Although they're still in beta, Projects provide (IMO) a cleaner deployment experience. Worth giving a try if you haven't checked them out yet. 😄