mirror of
https://github.com/migatu/conjurer.git
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Michal Tuszowski
ebc73c16d4
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>
95 lines
4.4 KiB
Docker
95 lines
4.4 KiB
Docker
# Radio Conjurer - Liquidsoap runtime built through opam, so the OCaml,
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# opam and Liquidsoap versions are all selectable at build time.
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#
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# Build from the repository root, e.g.:
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# docker build -f docker/Dockerfile.radio -t conjurer-radio .
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# docker build -f docker/Dockerfile.radio -t conjurer-radio \
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# --build-arg LIQUIDSOAP_VERSION=2.1.4 --build-arg OCAML_VERSION=4.14.2 .
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#
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# Version notes (matched to radio_conjurer.liq, which targets 2.1.4):
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# * Liquidsoap 2.1.x requires OCaml 4.x - it does NOT build on OCaml 5.
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# Production ran the 4.13.0 switch; 4.14.x is the maintained 4.x line and
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# builds 2.1.4 fine. Pass OCAML_VERSION=4.13.0 for bit-for-bit parity.
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# * The ocaml-ffmpeg bindings compatible with 2.1.4 target the FFmpeg 5.x
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# library family (libavcodec59/libavformat59/libavutil57...). Debian
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# bookworm ships exactly that, which is why this image needs NO ffmpeg
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# pinning: the old ffmpeg.pref (Pin-Priority 1001 on deb.debian.org) only
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# existed to force those Debian builds over the Raspberry Pi OS repo's
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# conflicting ones. Single-repo container = the pin is redundant.
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FROM debian:bookworm-slim
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ARG OPAM_VERSION=2.1.5
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ARG OCAML_VERSION=4.14.2
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ARG LIQUIDSOAP_VERSION=2.1.4
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# Optional liquidsoap features, resolved together with liquidsoap by opam.
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# These cover everything radio_conjurer.liq uses:
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# mad+lame - mp3 decode/encode (%mp3 icecast stream)
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# cry - output.icecast
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# taglib - tag/replaygain metadata
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# pulseaudio- input.pulseaudio (mic) + output.pulseaudio
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# samplerate- resampling
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# inotify - playlist(reload_mode="watch")
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# ffmpeg - decode fallback + replaygain computation
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ARG LIQ_OPAM_PACKAGES="mad lame cry taglib pulseaudio samplerate inotify ffmpeg"
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# System libraries: build deps for the opam packages above plus the matching
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# runtime libs. The libav*-dev list mirrors the old ffmpeg.pref family.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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build-essential m4 pkg-config git curl ca-certificates unzip rsync \
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libpcre3-dev libgmp-dev zlib1g-dev \
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libmad0-dev libmp3lame-dev libtag1-dev \
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libpulse-dev libsamplerate0-dev \
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libavcodec-dev libavformat-dev libavutil-dev libavfilter-dev \
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libavdevice-dev libswresample-dev libswscale-dev libpostproc-dev \
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ffmpeg \
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pulseaudio pulseaudio-utils \
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&& rm -rf /var/lib/apt/lists/*
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# Group membership for PulseAudio/ALSA access. On the Pi this was done by
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# hand for the system-wide pulse socket; in the image it is baked in. The
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# 'pulse-access' group comes with the pulseaudio package.
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RUN usermod -aG audio,pulse-access root
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# opam as a static binary so OPAM_VERSION is a real choice (apt would pin us
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# to whatever bookworm ships).
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RUN ARCH=$(uname -m) \
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&& curl -fsSL -o /usr/local/bin/opam \
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"https://github.com/ocaml/opam/releases/download/${OPAM_VERSION}/opam-${OPAM_VERSION}-${ARCH}-linux" \
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&& chmod +x /usr/local/bin/opam
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# OCaml switch + liquidsoap and its optional feature libraries in one solve,
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# so liquidsoap is compiled WITH those features enabled.
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RUN opam init -y --bare --disable-sandboxing \
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&& opam switch create default "${OCAML_VERSION}" \
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&& opam install -y "liquidsoap.${LIQUIDSOAP_VERSION}" ${LIQ_OPAM_PACKAGES} \
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&& opam clean -a -c -s --logs
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ENV PATH="/root/.opam/default/bin:${PATH}"
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# Build-time smoke test: the binary runs and reports the requested version.
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RUN liquidsoap --version
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# Minimal system-wide pulse config for headless VMs (PULSE_MODE=internal):
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# a null sink so output.pulseaudio()/input.pulseaudio() work with no sound
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# hardware (mic becomes silence, which blank.strip already gates out).
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COPY docker/pulse-system.pa /etc/pulse/system.pa
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# The script and its persistent params are seeded into the data volume on
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# first run (never overwritten), so live edits survive image rebuilds.
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WORKDIR /app
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COPY conjurer_musician/radio_conjurer.liq ./radio_conjurer.liq
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COPY conjurer_musician/script.params ./script.params
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COPY docker/entrypoint.radio.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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# Mount points mirror the paths hardcoded in radio_conjurer.liq, so the
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# script runs unmodified: data at /home/pi/Conjurer, music at
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# /home/pi/MediaFolder/mp3.
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VOLUME ["/home/pi/Conjurer", "/home/pi/MediaFolder/mp3"]
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# 54321 = harbor /skip (the bot's RADIO_HARBOR), 9999 = interactive harbor.
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EXPOSE 54321 9999
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ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
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CMD ["liquidsoap", "/home/pi/Conjurer/radio_conjurer.liq"]
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