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May 1, 2017
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Document that custom builds are disabled by default #4295

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8 changes: 5 additions & 3 deletions admin_guide/securing_builds.adoc
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Expand Up @@ -22,12 +22,14 @@ xref:../architecture/core_concepts/builds_and_image_streams.adoc#custom-build[Cu
builds] are inherently less safe than
xref:../architecture/core_concepts/builds_and_image_streams.adoc#source-build[Source
builds], given that they can execute any code in the build with potentially full
access to the node's Docker socket. xref:../architecture/core_concepts/builds_and_image_streams.adoc#docker-build[Docker
access to the node's Docker socket, and as such are disabled by default. xref:../architecture/core_concepts/builds_and_image_streams.adoc#docker-build[Docker
build] permission should also be granted with caution as a vulnerability in the Docker build
logic could result in a privileges being granted on the host node.

By default, all users that can create builds are granted permission to use all
build strategies (Docker, Source-to-Image, and Custom).
By default, all users that can create builds are granted permission to use the
Docker and Source-to-Image build strategies. Users with xref:../architecture/additional_concepts/authorization.adoc#roles[*cluster-admin*]
privileges can enable the Custom build strategy, as referenced in the xref:restricting-build-strategies-to-a-user-globally[Restricting Build Strategies to a User Globally]
section of this page.

You can control who can build with what build strategy using an
xref:../architecture/additional_concepts/authorization.adoc#architecture-additional-concepts-authorization[authorization
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