We’re migrating our apps from Distillery to mix release. It has been going well so far, but one thing that has been confusing us is that files placed in rel/overlays don’t seem to be copied to anywhere in the release (we also have the :tar step in the release). The following is a minimum reproduction:
def project do
[
# ...
releases: [
demo: [
include_executables_for: [:unix],
steps: [:assemble, :tar]
]
]
]
end
We placed a Dockerfile under the rel/overlays folder.
But when I grep the whole folder after running MIX_ENV=prod mix release, the Dockerfile still only exists in one copy, in rel/overlays, but not anywhere in the release itself.
The demo-0.1.0.tar.gz also doesn’t contain this file anywhere.
We tried to manually specify `overlays: “some_other_dir” but it didn’t work either.
The Elixir version is 1.9.4
Did we do something wrong?
