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docs/build/buildkit/color-output-controls.md

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Color output controls Learn how to control the color of BuildKit progress output. build, buildx buildkit, color, terminal
/build/customize/color-output-controls/

BuildKit and Buildx have support for modifying the colors that are used to output information to the terminal. You can set the environment variable BUILDKIT_COLORS to something like run=123,20,245:error=yellow:cancel=blue:warning=white to set the colors that you would like to use:

Progress output custom colors

Setting NO_COLOR to anything will disable any colorized output as recommended by no-color.org{:target="blank" rel="noopener" class=""}:

Progress output no color

Note

Parsing errors will be reported but ignored. This will result in default color values being used where needed.

See also the list of pre-defined colors{:target="blank" rel="noopener" class=""}.