# Build Redis from official Linux source tarball (Ubuntu 22.04 base)
# Stage 1: build
FROM ubuntu:22.04 AS builder
ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        ca-certificates \
        curl \
        build-essential \
        tcl \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /tmp/build

# Download and extract Redis source (Linux release)
RUN curl -fsSL https://download.redis.io/releases/redis-7.0.0.tar.gz -o redis.tar.gz \
    && tar xzf redis.tar.gz --strip-components=1 -C /tmp/build

WORKDIR /tmp/build

# Build and install Redis to /usr/local
RUN make -j"$(nproc)" && make install PREFIX=/usr/local

# Stage 2: runtime
FROM ubuntu:22.04
ENV PATH=/usr/local/bin:$PATH

RUN apt-get update \
    && apt-get install -y --no-install-recommends ca-certificates \
    && rm -rf /var/lib/apt/lists/*

COPY --from=builder /usr/local /usr/local

EXPOSE 6379
CMD ["redis-server"]