# Reproducible Burrito build environment for the agent.
# Produces linux_amd64 + linux_arm64 binaries into /work/agent/burrito_out.
# Keep elixir/OTP in sync with what the project compiles against locally
# (see `elixir --version` — currently Elixir 1.19 on OTP 28).
FROM elixir:1.19-otp-28 AS build

ENV MIX_ENV=prod DEBIAN_FRONTEND=noninteractive

RUN apt-get update && apt-get install -y --no-install-recommends \
      build-essential git ca-certificates curl xz-utils unzip 7zip \
    && rm -rf /var/lib/apt/lists/*

# Zig (Burrito needs it for cross-compile).
# Zig 0.15.x flipped the tarball naming from zig-linux-ARCH- to zig-ARCH-linux-;
# keep the URL pattern in sync if you bump the version.
ARG ZIG_VERSION=0.15.2
RUN curl -fsSL https://ziglang.org/download/${ZIG_VERSION}/zig-$(uname -m)-linux-${ZIG_VERSION}.tar.xz \
    | tar -xJ -C /opt && ln -s /opt/zig-*-linux-*/zig /usr/local/bin/zig

WORKDIR /work/agent
RUN mix local.hex --force && mix local.rebar --force

# Copy sources last for layer caching
COPY mix.exs mix.lock ./
RUN mix deps.get --only prod

COPY lib lib
COPY config config

RUN mix deps.compile

# BUILD_ID is injected by scripts/build-linux.sh (typically the git short SHA).
# Declared here — not earlier — so deps.compile stays cacheable across builds.
ARG BUILD_ID=dev
ENV BUILD_ID=${BUILD_ID}
RUN mix release

# Default: print the produced artifacts
CMD ["sh", "-c", "ls -la burrito_out/"]