Building docs using odoc.
dune exec -- docs-ci \
--ocluster-submission cap/XXX.cap \
--ssh-host ci.mirage.io \
--ssh-user docs \
--ssh-privkey cap/id_rsa \
--ssh-pubkey cap/id_rsa.pub \
--ssh-folder /data/docs-ci \
--ssh-endpoint https://ci.mirage.io/staging \
--jobs 6 \
--filter mirage \
--limit 6