tvalentyn commented on a change in pull request #16938:
URL: https://github.com/apache/beam/pull/16938#discussion_r821196498
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File path: website/www/site/content/en/documentation/runtime/environments.md
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@@ -171,6 +171,49 @@ creates a Java 8 SDK image with appropriate licenses in
`/opt/apache/beam/third_
By default, no licenses/notices are added to the docker images.
+#### Build an existing container image to make it compatible with Apache Beam
Runners {#modify-existing-base-image}
+Beam offers a way to take a Beam container image and customize it. But if you
have an existing base image to be compatible with Apache Beam Runners, use a
[multi-stage
build](https://docs.docker.com/develop/develop-images/multistage-build/)
process to copy over the necessary artifacts from a default Apache Beam base
image and provide your custom container image.
+
+
+1. Copy necessary artifacts from Apache Beam base image to your image.
+ ```
+ # This can be any container image,
+ FROM python:3.8-slim
+
+ # Install SDK. (needed for Python SDK)
+ RUN pip install --no-cache-dir apache-beam[gcp]==2.25.0
Review comment:
I thought using Dockerfile params (ARG) in the FROM statement wasn't
possible. That's what I was referring to.
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