Havana Docker build grade error

[marcus]

Running `docker-compose up`

=> ERROR [havana-havana-server builder 10/12] RUN ./gradlew build               0.9s
 => CANCELED [havana-havana-web builder 11/13] RUN ./gradlew build               1.3s
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 > [havana-havana-server builder 10/12] RUN ./gradlew build:
#0 0.824 /bin/sh: 1: ./gradlew: not found
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failed to solve: executor failed running [/bin/sh -c ./gradlew build]: exit code: 127

I'm using Windows 10 with Docker desktop.