Aaron D. Lee
c612a0d305
One Dockerfile, four named --target stages: rutster-engine (FOB), rutster-brain (brain), rutster-edge (custom xcaddy + curated DNS plugins cloudflare/route53/porkbun/hetzner/desec, duckdns excluded per spec §3.2), rutster-allinone (s6-overlay v3 supervising caddy + FOB + brain + valkey-server). Builder pins rust:1.85-slim-bookworm (matches rust-toolchain.toml). libopus-dev in builder, libopus0 in runtime (matches dev — spec §6.1 distro-over-static-bundled). Brain image gets libopus0 too: although the brain never calls an opus symbol, the linker records NEEDED:libopus.so.0 because rutster-brain-realtime depends on rutster-media (spec ambiguity resolved in this slice's plan README). All-in-one vendors s6-overlay v3.2.0.0 (ISC) + uses upstream valkey/valkey binary (COPY --from pattern, BSD-3). Bundled-binary licenses aggregation-clean vs GPL-3 (Caddy Apache-2.0). No Rust crates touched; cargo-deny unaffected. s6-rc service definitions land in this commit (caddy/engine/brain/ valkey-database run scripts + dependency edges). The Caddyfile lands in Task 3 (same PR); the image-build CI job (Task 7) runs after both. Signed-off-by: Aaron D. Lee <himself@adlee.work>
212 lines
9.5 KiB
Docker
212 lines
9.5 KiB
Docker
# syntax=docker/dockerfile:1.7
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# deploy/Dockerfile — multi-stage, four first-party images (spec §6.1).
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#
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# One Dockerfile, four named --target stages:
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# * rutster-engine — FOB only (binary `rutster`)
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# * rutster-brain — brain only (binary `rutster-brain-realtime`)
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# * rutster-edge — custom xcaddy build with curated DNS plugins
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# * rutster-allinone — s6-overlay v3 supervising caddy + FOB + brain + valkey-server
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#
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# Build all four locally:
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# docker buildx build --target rutster-engine -t rutster-engine:ci -f deploy/Dockerfile .
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# docker buildx build --target rutster-brain -t rutster-brain:ci -f deploy/Dockerfile .
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# docker buildx build --target rutster-edge -t rutster-edge:ci -f deploy/Dockerfile .
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# docker buildx build --target rutster-allinone -t rutster-allinone:ci -f deploy/Dockerfile .
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#
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# Toolchain pin: rust-toolchain.toml pins `channel = "1.85"`. The builder
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# image is `rust:1.85-slim-bookworm` (NOT `rust:stable` — image builds must
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# reproduce exactly what the MSRV matrix in CI gates; `stable` would float).
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#
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# libopus strategy (spec §6.1 "distro libopus0 over static-bundled"):
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# * Builder stage: `apt-get install libopus-dev` — the -dev headers needed
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# to compile the `opus` crate (FFI against libopus; verified:
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# crates/rutster-media/Cargo.toml line 12: `opus = { workspace = true }`).
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# * Runtime stages (engine + brain + all-in-one): `apt-get install libopus0`
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# — the shared library binary. Brain image gets libopus0 too (see spec
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# ambiguity #2 in this slice's plan): rutster-brain-realtime's
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# Cargo.toml depends on rutster-media, so the linker records
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# `NEEDED: libopus.so.0` in the brain ELF even though the brain never
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# calls an opus symbol. Missing .so.0 would crash the brain at startup.
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# * Matches the dev loop exactly. Do NOT use the audiopus_sys bundled-cmake
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# fallback — system libopus is available in Debian.
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########################################
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# Stage 1: Rust builder — compiles both binaries once.
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########################################
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FROM rust:1.85-slim-bookworm AS builder
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# libopus-dev: the headers the `opus` crate's build.rs expects.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libopus-dev \
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ca-certificates \
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curl \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /usr/src/rutster
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COPY . .
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# Build both binaries in one `cargo build --bins` invocation so the
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# dependency graph is compiled once (warm ccache/rustc cache covers both).
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# --release is mandatory: debug builds of str0m + opus run 5-10x slower
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# than the 20ms tick budget; a debug-image container would burn the tick-lag
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# threshold on first call.
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RUN cargo build --release --bins \
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&& cp /usr/src/rutster/target/release/rutster /usr/local/bin/rutster \
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&& cp /usr/src/rutster/target/release/rutster-brain-realtime /usr/local/bin/rutster-brain-realtime
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########################################
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# Stage 2: Caddy builder — xcaddy with the curated DNS plugin set.
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########################################
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# caddy:2.8-builder ships Go + xcaddy. The plugin set is exactly spec §3.2
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# / TLS brief §3(a): cloudflare, route53, porkbun, hetzner, desec.
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# duckdns EXCLUDED — no license file (spec §3.2).
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# Plugin licenses: cloudflare=Apache-2.0; route53/porkbun/hetzner/desec=MIT.
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# Aggregation-clean vs GPL-3 (Caddy core itself is Apache-2.0).
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FROM caddy:2.8-builder AS caddy-builder
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RUN xcaddy build \
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--with github.com/caddy-dns/cloudflare \
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--with github.com/caddy-dns/route53 \
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--with github.com/caddy-dns/porkbun \
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--with github.com/caddy-dns/hetzner \
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--with github.com/caddy-dns/desec \
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&& mv /build/caddy /usr/local/bin/caddy
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########################################
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# Stage 3: Valkey binary source (upstream image, no rebuild).
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########################################
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# COPY --from pattern: pull just the valkey-server binary out of the
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# upstream BSD-3 image; avoids rebuilding valkey from source (saves ~5 min
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# per build + ~150 MB of build deps). The binary is statically-linked
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# enough for Debian bookworm (verified by upstream's Debian-based image).
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FROM valkey/valkey:8.0 AS valkey-src
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########################################
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# Target: rutster-engine — the FOB only.
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########################################
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FROM debian:bookworm-slim AS rutster-engine
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# libopus0: the shared library (see libopus strategy comment at top).
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libopus0 \
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ca-certificates \
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curl \
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&& rm -rf /var/lib/apt/lists/*
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COPY --from=builder /usr/local/bin/rutster /usr/local/bin/rutster
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COPY deploy/Caddyfile /etc/rutster/Caddyfile
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# RUTSTER_HTTP_BIND defaults to 0.0.0.0:8080 (config.rs). Behind Caddy, the
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# engine binds the compose-network address; behind --network host (T1
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# solo), it binds 127.0.0.1:8080.
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EXPOSE 8080
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# Media UDP range — published via RUTSTER_MEDIA_PORT_RANGE.
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EXPOSE 49152-49407/udp
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ENTRYPOINT ["/usr/local/bin/rutster"]
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########################################
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# Target: rutster-brain — brain only.
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########################################
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FROM debian:bookworm-slim AS rutster-brain
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# libopus0: see spec ambiguity #2 in this slice's plan —
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# rutster-brain-realtime's Cargo.toml depends on rutster-media which
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# depends on the `opus` crate; even though the brain never calls an opus
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# symbol, the ELF records `NEEDED: libopus.so.0` (linker dead-strips
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# unused symbols but the .so is still required at dlopen-time before
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# dead-strip can prove they're unused). A future brain-crate refactor
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# that drops the rutster-media dep can drop this package too.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libopus0 \
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ca-certificates \
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&& rm -rf /var/lib/apt/lists/*
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COPY --from=builder /usr/local/bin/rutster-brain-realtime /usr/local/bin/rutster-brain-realtime
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# Brain binds 127.0.0.1:8082 (loopback-only tap posture until step 6).
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# In compose (T2), the brain shares the engine's netns via
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# `network_mode: "service:engine"` so this loopback IS the engine's
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# loopback — the FOB can reach the brain's tap port without exposing it.
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EXPOSE 8082
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ENTRYPOINT ["/usr/local/bin/rutster-brain-realtime"]
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########################################
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# Target: rutster-edge — custom Caddy build.
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########################################
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# scratch/alpine choice (spec §6.1): alpine gives a shell for debugging
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# (`docker exec -it rutster-edge sh`); scratch is purer but undebuggable.
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# Alpine's musl is fine for the static Go binary xcaddy produces.
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FROM alpine:3.20 AS rutster-edge
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# ca-certificates: ACME TLS validation. curl: smoke-test `caddy reload`
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# invocations + `curl /healthz` from inside the container.
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RUN apk add --no-cache ca-certificates curl
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COPY --from=caddy-builder /usr/local/bin/caddy /usr/local/bin/caddy
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COPY deploy/Caddyfile /etc/caddy/Caddyfile
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# Caddy needs /data for ACME state — losing it risks the Let's Encrypt
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# duplicate-cert lockout (spec §2.1, TLS brief §5 risk 5). Mount a volume
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# at /data in production. In CI (local_certs) /data just holds the internal
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# CA — recreating is fine, but the volume mount keeps prod + CI on the
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# same code path.
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VOLUME /data
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EXPOSE 80 443
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ENTRYPOINT ["/usr/local/bin/caddy"]
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CMD ["run", "--config", "/etc/caddy/Caddyfile", "--adapter", "caddyfile"]
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########################################
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# Target: rutster-allinone — s6-overlay v3 supervising four processes.
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########################################
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FROM debian:bookworm-slim AS rutster-allinone
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# libopus0 (FOB needs it; brain too — see rutster-brain target above).
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# curl: smoke-test invocations + `caddy reload` exec.
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# ca-certificates: ACME.
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# xz: s6-overlay binary tarball extraction (extract-then-rm).
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RUN apt-get update && apt-get install -y --no-install-recommends \
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libopus0 \
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ca-certificates \
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curl \
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xz-utils \
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&& rm -rf /var/lib/apt/lists/*
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# s6-overlay v3.2.0.0 — ISC license (aggregation-clean vs GPL-3).
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# Two tarballs: noarch (the service definitions + s6-rc bundle) + x86_64
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# (the binaries — linux/amd64 only per spec §1.2). arm64 is a named
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# deferral (ADR-0011 §1.2); when it lands, this Dockerfile grows an
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# `ARG TARGETARCH` + `COPY` per-arch.
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COPY deploy/s6-overlay-noarch.tar.xz /tmp/s6-overlay-noarch.tar.xz
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COPY deploy/s6-overlay-x86_64.tar.xz /tmp/s6-overlay-x86_64.tar.xz
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RUN tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz \
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&& tar -C / -Jxpf /tmp/s6-overlay-x86_64.tar.xz \
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&& rm /tmp/s6-overlay-noarch.tar.xz /tmp/s6-overlay-x86_64.tar.xz
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# Binaries from earlier stages.
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COPY --from=builder /usr/local/bin/rutster /usr/local/bin/rutster
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COPY --from=builder /usr/local/bin/rutster-brain-realtime /usr/local/bin/rutster-brain-realtime
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COPY --from=caddy-builder /usr/local/bin/caddy /usr/local/bin/caddy
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COPY --from=valkey-src /usr/local/bin/valkey-server /usr/local/bin/valkey-server
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# Caddyfile + s6 service definitions (long-lined below).
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COPY deploy/Caddyfile /etc/caddy/Caddyfile
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COPY deploy/s6-rc.d/ /etc/s6-overlay/s6-rc.d/
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# Volumes: Caddy /data (ACME state — loss risks LE lockout per TLS brief
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# §5 risk 5) + Valkey /var/lib/valkey (stream/state persistence per
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# ADR-0005).
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VOLUME /data /var/lib/valkey
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# Caddy :80/:443 public; FOB :8080 behind Caddy; brain :8082 loopback;
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# valkey :6379 loopback; media UDP direct.
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EXPOSE 80 443 8080 8082 6379 49152-49407/udp
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# s6-overlay v3 entrypoint — the binary `s6-overlay-init` (symlinked from
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# /s6-init in the noarch tarball) runs the service bundle in
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# /etc/s6-overlay/s6-rc.d/ via s6-rc.
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ENTRYPOINT ["/s6-init"]
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