currently, docker-engine can only use tini as injected init. catatonit
as a package exists, but it does not create the symlink that would be
needed at runtime [0].
Add a choice at the docker-engine level, for which injected init to use,
bringing catatonit to the integration level of tini.
[0] that could be done in a post-build script, but that's not practical.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Christian Stewart <christian@aperture.us>
Cc: Fiona Klute (WIWA) <fiona.klute@gmx.de>
Tested-by: Fiona Klute (WIWA) <fiona.klute@gmx.de>
[Julien: move the legacy option to a new 2025.05 section]
Signed-off-by: Julien Olivain <ju.o@free.fr>