tvalentyn commented on a change in pull request #16938:
URL: https://github.com/apache/beam/pull/16938#discussion_r828533796
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File path: website/www/site/content/en/documentation/runtime/environments.md
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@@ -171,6 +171,48 @@ 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.
+#### Modifying an existing container image to make it compatible with Apache
Beam Runners {#modify-existing-base-image}
+Beam offers a way to provide your own custom container image. The easiest way
to build a new custom image that is compatible with Apache Beam Runners is to
use a [multi-stage
build](https://docs.docker.com/develop/develop-images/multistage-build/)
process. This copies over the necessary artifacts from a default Apache Beam
base image to build your custom container image.
+
+1. Copy necessary artifacts from Apache Beam base image to your image.
+ ```
+ # This can be any container image,
+ FROM python:3.7-bullseye
+
+ # Install SDK. (needed for Python SDK)
+ RUN pip install --no-cache-dir apache-beam[gcp]==2.35.0
+
+ # Copy files from official SDK image, including script/dependencies.
+ COPY --from=apache/beam_python3.7_sdk:2.35.0 /opt/apache/beam /opt/apache/beam
Review comment:
the requirements will be installed at runtime , when we pip-install the
staged apache beam sdk here
https://github.com/apache/beam/blob/d46bd07501e01c7d35d3857e296bc8b75564a8f0/sdks/python/container/piputil.go#L164
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