mix docker.release fails expanding tar.gz

[derailed]

Hi,

While running mix docker.release the command fails in the Dockerfile add myapp.tar.gz. Docker complains about a missing tar header hence causing the release to fail building the image.
I am running docker version 17.03.1-ce with mix_docker rev 0.4.2.

Thank you!

[r8code]

if you came from
https://shovik.com/blog/8-deploying-phoenix-apps-with-docker

try check your .dockerignore file , probabbly you are ignoring myapp.tar.gz
or try
set include_erts: true
in rel/config.ex