Hey folks I m trying to follow the example from <https blog Pants #general

Hey folks! I’m trying to follow the example from <...

better-van-82973

08/04/2023, 2:15 PM

Hey folks! I’m trying to follow the example from this blog post to split my PEX + Docker builds into multiple images. I managed to get everything running through “Multi-stage build leveraging 2 PEXs”, but have some trouble with the last step in “Multiple Images and tagging”. I’m able to get the

srcs

and

deps

images to build correctly, but when trying to build the final combined image I get the following error:

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#3 [internal] load metadata for myrepo:srcs
#3 ERROR: myrepo:srcs: not found

But when I run

docker images

, the images definitely exist:

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myrepo          deps            491bcdc66b66   23 hours ago         560MB
myrepo          srcs            5b5af6a920cd   23 hours ago         159MB

Is there some other step I forgot before building the final image?

better-van-82973

08/04/2023, 2:16 PM

Here’s my BUILD file:

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docker_image(
    name="img-deps",
    registries=[],
    repository="myrepo",
    image_tags=["deps"],
    skip_push=True,
    instructions=[
        "FROM --platform=linux/amd64 python:3.10-slim AS deps",
        "COPY api.src.py.api/binary-deps.pex /binary-deps.pex",
        "RUN PEX_TOOLS=1 /usr/local/bin/python3.10 /binary-deps.pex venv --scope=deps --compile /bin/app",
    ]
)

docker_image(
    name="img-srcs",
    registries=[],
    repository="myrepo",
    image_tags=["srcs"],
    skip_push=True,
    instructions=[
        "FROM --platform=linux/amd64 python:3.10-slim as srcs",
        "COPY api.src.py.api/binary-srcs.pex /binary-srcs.pex",
        "RUN PEX_TOOLS=1 /usr/local/bin/python3.10 /binary-srcs.pex venv --scope=srcs --compile /bin/app",
    ]
)

docker_image(
    name="img",
    dependencies=[":img-srcs", ":img-deps"],
    registries=["@aws"],
    repository="myrepo",
    image_tags=["{build_args.TAG}"],
    instructions=[
        "FROM --platform=linux/amd64 python:3.10-slim",
        "RUN apt-get update && apt-get install -y procps build-essential python3-dev libpq-dev",
        'ENTRYPOINT ["/bin/app/pex"]',
        "COPY --from=myrepo:srcs /bin/app /bin/app",
        "COPY --from=myrepo:deps /bin/app /bin/app",
        "EXPOSE 80",
    ],
)

bitter-ability-32190

08/04/2023, 2:17 PM

oh whoops. Bug in the blog post 🙂

bitter-ability-32190

08/04/2023, 2:19 PM

FYI @happy-kitchen-89482 we should edit the blog post. Last code block should say:

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instructions = [
    	    "FROM companyname/app:deps as deps",
    	    "FROM 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",
	]

bitter-ability-32190

08/04/2023, 2:19 PM

@better-van-82973 try that 🙂

better-van-82973

08/04/2023, 2:19 PM

Thanks for the fast response! Will give it a go

better-van-82973

08/04/2023, 2:19 PM

Also thanks for the blog post - my cold start times went way down after implementing a bunch of the stuff you mention there 🙂

❤️ 1

bitter-ability-32190

08/04/2023, 2:20 PM

What's mine is yours :)

better-van-82973

08/04/2023, 2:21 PM

That worked! Thanks Josh

happy-kitchen-89482

08/04/2023, 3:55 PM

@bitter-ability-32190 Are you able to edit the post?

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