I've managed to get my flows to run in docker infrastructure, using a remote s3 storage block for deploying flows, which is pretty cool (to me :P). (earlier struggles) I'm curious how people deploying/declaring/installing the prefect dependencies of their flows though 🤔 . Is it correct that the flows themselves are downloaded at runtime, but the dependencies have to be included in the infrastructure image ahead of time? Say I'm trying to orchestrate a Java application. Does the Java application image also need to have Python, prefect and the prefect dependencies pre-installed?

You will need to have Python and pip installed in the Docker container. You can install other pip packages at run time by specifying

EXTRA_PIP_PACKAGES

for the

env

parameter. Here is an example.

Thanks for confirming that @Khuyen Tran 🙂

FYI, if you need a faster boot-up time, you can make a custom Docker image with the packages installed.