Michal Tuszowski ebc73c16d4 docker: Liquidsoap radio container (opam-built, version-selectable) ...

Dockerises the radio_conjurer.liq environment on Debian bookworm:

- Dockerfile.radio builds Liquidsoap through opam with build args for
  OPAM_VERSION (static binary), OCAML_VERSION (default 4.14.2; 2.1.x needs
  OCaml 4.x - prod ran 4.13.0, pass it for parity) and
  LIQUIDSOAP_VERSION (default 2.1.4, matching the script)
- LIQ_OPAM_PACKAGES installs exactly the features the script uses:
  mad+lame (mp3), cry (icecast), taglib (tags/replaygain), pulseaudio
  (mic/out), samplerate, inotify (watch-reload), ffmpeg
- ffmpeg.pref verdict: the Pi pin forced Debian's FFmpeg 5.x family
  (libavcodec59...) over RPi OS repo builds because the ocaml-ffmpeg
  bindings are compiled against those sonames; bookworm ships them
  natively so the container needs no pin (documented, not copied)
- pulse-access/audio group memberships baked in (were manual on the Pi);
  PULSE_MODE=internal runs a system-wide pulse with a null sink so the
  unmodified script works on a headless VM (mic = silence), host mode
  mounts the real socket, none for edited scripts
- mounts mirror the script's hardcoded paths (/home/pi/Conjurer,
  /home/pi/MediaFolder/mp3) so radio_conjurer.liq runs unmodified;
  entrypoint seeds script+params on first run (never overwrites), creates
  missing playlists, seeds placeholder icecast credentials (loud warning)
  and generates a silent emergency mp3 when the single() file is missing
- compose.radio.yaml: extra_hosts maps the script's host="radio" to
  ICECAST_HOST_IP; exposes 54321 (bot's RADIO_HARBOR /skip) and 9999
- docs: radio section with build args, pulse modes and the ffmpeg.pref /
  groups verdicts

Part 2 of this PR (splitting bot<->radio comms out of the musician into a
radio+betoniarka container) follows on this branch.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-08 23:42:41 +02:00

..

deployment

docker: Liquidsoap radio container (opam-built, version-selectable)

2026-07-08 23:42:41 +02:00