I'm trying to setup fast incremental docker image builds by using two separate layers for third party and first party packages. I see that I can set

include_requirements=False

in

python_awslambda

to get the first party stuff, but how do I get the corresponding third party stuff?

You're gonna love https://blog.pantsbuild.org/optimizing-python-docker-deploys-using-pants/

Thanks. I think there is some work to make the image compatible with aws lambda, but this may work.

Yup! We tweak it for our own needs as well, but stands up as a great template

For anyone else that finds this: I am building an amd64 image on mac which resulted in a confusing error from docker on the

COPY --from

step:

ERROR: pull access denied, repository does not exist or may require authorization: server message: insufficient_scope: authorization failed

fixed by adding some FROM statements:

instructions = [
            "FROM --platform=linux/amd64 companyname/app:deps as deps",
            "FROM --platform=linux/amd64 companyname/app:srcs as srcs",
    	    "FROM python:3.10-slim",
    	    'ENTRYPOINT ["/bin/app/pex"]',
    	    "COPY --from=deps /bin/app /bin/app",
    	    "COPY --from=srcs /bin/app /bin/app",
	]