Paweł Gronowski ff7f76af7a Handle empty DOCKER_BUILDKIT like unset ... This fixes the cli erroring out if the variable is set to an empty value. ``` $ export DOCKER_BUILDKIT= $ docker version DOCKER_BUILDKIT environment variable expects boolean value: strconv.ParseBool: parsing "": invalid syntax ``` Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>		2023-04-19 14:17:01 +02:00
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docker	Handle empty DOCKER_BUILDKIT like unset	2023-04-19 14:17:01 +02:00