add healthchecks to docker services

• AllegroRSS (@empty plz add)
• ASF
• avocado-server
• benchmark-webserver
• bitwarden_rs
• dockerhub-rss
• funkwhale
  • flaczek
• gitlab (would be pain, but I'm not sure if it doesn't already run rootless)
• haproxy
• matrix
  • synapse and http workers
  • synapse non-http workers - waiting for upstream
  • maubot
  • element
  • haproxy
  • mautrix-facebook
  • mautrix-telegram
  • redis??
• mc-creative
• mc-redstone
• mirror
• mumble
• netboot
• nextcloud
• OLX-RSS
• pipewire-net-audio
• plausible
• postgres
• telegram-ark
• telegram-deezer-search
• telegram-sjp
• telegram-tidal-search
• telegram-uno
• telegram-userbenchmark
• waterfall
• xmpp
• shynet - waiting for upstream