- New start-hermes.sh: multi-profile launcher that works with s6-overlay's
main-program model (replaces bash->tini->entrypoint.sh chain)
- Dockerfile: COPY start-hermes.sh into /usr/local/bin/ alongside
run-multi-gateways.sh (which is now unused but kept for reference)
- compose.yml: remove entrypoint override, CMD now points at
/usr/local/bin/start-hermes.sh via the image default ENTRYPOINT
Fixes the SIGTERM crash loop caused by S6_CMD_ARG0 being unset when the
deprecated entrypoint.sh shim bypassed s6-overlay's /init.