Dupe package repos

[cuihtlauac]

It seems there is some duplication between .opam/repo/default/packages and opam-repository/packages. Is it accidental or on purpose?

>docker run --rm -it ocaml/opam:debian-ocaml-4.13 sh -c 'diff -Naqr .opam/repo/default/packages opam-repository/packages && du -shx .opam/repo/default/packages opam-repository/packages'
192M	.opam/repo/default/packages
192M	opam-repository/packages

>docker run --rm -it ocaml/opam:ubuntu-ocaml-4.13 sh -c 'diff -Naqr .opam/repo/default/packages opam-repository/packages && du -shx .opam/repo/default/packages opam-repository/packages'
192M	.opam/repo/default/packages
192M	opam-repository/packages

>docker run --rm -it ocaml/opam:fedora-ocaml-4.13 sh -c 'diff -Naqr .opam/repo/default/packages opam-repository/packages && du -shx .opam/repo/default/packages opam-repository/packages'
192M	.opam/repo/default/packages
192M	opam-repository/packages

docker run --rm -it ocaml/opam:alpine-ocaml-4.13 sh -c 'diff -Naqr .opam/repo/default/packages opam-repository/packages && du -shx .opam/repo/default/packages opam-repository/packages'
192M	.opam/repo/default/packages
192M	opam-repository/packages