Additionally, simplify some of the certificate generation
scripts and rename `ca.ext` to `localhost.ext`.
Certificates should be regenerated as of this commit.
Users can run `rm -rf ./cache/*` to clear out any existing
certs, which will cause the `ca` service to regenerate them.
Additionally, since Docker infrastructure has been modified,
a new `aurweb:latest` image will need to be built.
See https://gitlab.archlinux.org/archlinux/aurweb/-/wikis/Docker
Signed-off-by: Kevin Morris <kevr@0cost.org>