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Multiple CMD instructions found.
Superseded by buildkit/MultipleInstructionsDisallowed, which covers duplicate CMD, ENTRYPOINT, and HEALTHCHECK instructions with auto-fix support.

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Description

If more than one CMD instruction is listed, only the last one takes effect.

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Examples

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Problematic code

FROM alpine
CMD echo "first"
CMD echo "second"

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Correct code

FROM alpine
CMD echo "second"

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Reference