https://wiki.debian.org/DebianRepository/Format#Signed-By says:
> **Signed-By**
> An optional field containing a comma separated list of
> OpenPGP key fingerprints to be used for validating
> the next Release file. The fingerprints must consist
> only of hex digits and may not contain spaces.
> The fingerprint specifies either the key the Release file
> must be signed with or the key the signature key must be
> a subkey of. The later match can be disabled by appending
> an exclamation mark to the fingerprint.
>
> If the field is present, a client should only accept future updates
> to the repository that are signed with keys listed in the field.
> The field should be ignored if the Valid-Until field is not present
> or if it is expired.
For both the CLI tools and JSON, the field is taken as a string verbatim.
When specified, we must also provide `Valid-Until` field,
and i'm not sure there is an 'infinity' value for it,
so 100 years will have to do?
Fixes https://github.com/aptly-dev/aptly/issues/1497
Initially found by automated repository health checks used by Termux
in https://github.com/termux/termux-packages/issues/27472
The root problem was 4.3.5a comparing less than 4.3.5-rc1-1 by aptly
According to debian "4.3.5a" > "4.3.5-rc1-1"
This is because dpkg splits hyphen for revision at the first hyphen,
whereas aptly was splitting at the last hyphen which is different from
dpkg's behaviour.
dpkg behaviour: https://git.dpkg.org/cgit/dpkg/dpkg.git/tree/lib/dpkg/parsehelp.c#n242
Perhaps this wasn't detected as there was broken tests in the repository
since the initial commit of aptly. This also fixes those tests
Enabling coverage near-doubles the incremental build time and adds
overhead to individual tests on the order of **5-10x** or more. It's not
essential to have this for quick local system-test runs, so add an option
to disable it.
When using rootless podman, the *current user* gets mapped to uid 0,
which results in the aptly user being unable to write to the build
directory. We can instead map the current user to the corresponding uid
in the container via `PODMAN_USERNS=keep-id`, which matches up with what
docker-wrapper wants...but then that will *enter the container as the
current uid*, which messes with the ability to set permissions on
`/var/lib/aptly`. That can be fixed by explicitly passing `--user 0:0`,
which should be a no-op on docker (since the container's default user is
already root).
Additionally, this adds `--security-opt label=disable` to avoid
permission errors when running on systems with SELinux enforcing.
