Make the USER
variable to docker
optional
#505
Merged
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Populating this variable fails under Linux if the local user doesn't have a username. This may happen when using Docker and mapping a user ID from the host into a container, such as when using
--user=$(id -u):$(id -g)
. I suggest making theUSER
environment variable passed todocker
optional, which allowscross
to work in the given scenario.