Dockerfile

# Dockerfile
#
# Build a PostgreSQL image with:
#   - pgenvelope C shim extension
#   - rustcore Rust cdylib linked into the extension
# Change PG_MAJOR to desired major PostgreSQL version.
ARG PG_MAJOR=16
FROM postgres:${PG_MAJOR}

# Install build tools, PostgreSQL dev headers, and Rust toolchain
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        build-essential \
        postgresql-server-dev-${PG_MAJOR} \
        curl \
        pkg-config \
        libssl-dev \
        softhsm2 \
        opensc \
        rustc \
        cargo \
        ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# Build the Rust core (rustcore)
# Assumes repo layout:
#   /usr/src/pgenvelope/rustcore/
COPY rustcore/ /usr/src/pgenvelope/rustcore/
WORKDIR /usr/src/pgenvelope/rustcore
RUN cargo build --release

# Build and install the C shim, linking against the Rust core
# Assumes:
#   cshim/Makefile (with SHLIB_LINK to ../rustcore/target/release)
#   cshim/pgenvelope.c
#   cshim/pgenvelope.control
#   cshim/pgenvelope--1.0.sql
COPY cshim/ /usr/src/pgenvelope/cshim/
WORKDIR /usr/src/pgenvelope/cshim

RUN make && make install && \
    # Ensure the Rust core library is available in Postgres's libdir at runtime
    cp ../rustcore/target/release/libpgenvelope_core.so "$(pg_config --libdir)"/ && \
    # Optional: cleanup build sources to keep image smaller
    rm -rf /usr/src/pgenvelope

# CMD and entrypoint inherited from postgres:16