zzstoatzz.io
atproto relay implementation in zig
zlay.waow.tech
fix: switch to Debian + glibc target for RocksDB compatibility
zig 0.15's C++ codegen for musl produces illegal instructions in
RocksDB's LRU cache (std::function vtable). Switch to Debian
bookworm-slim with x86_64-linux-gnu target.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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# multi-stage build: compile natively inside x86_64 linux container
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# (cross-compiling C++ from ARM64 produces illegal instructions in RocksDB)
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FROM --platform=linux/amd64 alpine:3.21 AS builder
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RUN apk add --no-cache curl tar xz
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# uses Debian (glibc) because zig 0.15's C++ codegen for musl
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# produces illegal instructions in RocksDB's LRU cache
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FROM --platform=linux/amd64 debian:bookworm-slim AS builder
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RUN apt-get update && apt-get install -y --no-install-recommends curl xz-utils ca-certificates && rm -rf /var/lib/apt/lists/*
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RUN curl -fSL https://ziglang.org/download/0.15.2/zig-x86_64-linux-0.15.2.tar.xz \
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| tar xJ -C /opt
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ENV PATH=/opt/zig-x86_64-linux-0.15.2:$PATH
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WORKDIR /build
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COPY . .
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RUN zig build -Doptimize=ReleaseSafe -Dcpu=baseline
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RUN zig build -Doptimize=ReleaseSafe -Dcpu=baseline -Dtarget=x86_64-linux-gnu
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FROM --platform=linux/amd64 alpine:3.21
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RUN apk add --no-cache ca-certificates
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FROM --platform=linux/amd64 debian:bookworm-slim
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RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates && rm -rf /var/lib/apt/lists/*
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COPY --from=builder /build/zig-out/bin/zlay /usr/local/bin/zlay
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RUN mkdir -p /data/events /data/collection-index
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ENV RELAY_DATA_DIR=/data/events