Add Docker packaging for pg_orbit extension

Three-stage Dockerfile: Ubuntu 22.04 builder (glibc-matched to
TimescaleDB-HA), scratch artifact image (~748KB), and standalone
postgres:17 image. All 6 regression suites run during build.
Makefile gains docker-build, docker-push, and docker-test targets.

.dockerignore

@@ -0,0 +1,18 @@
+.git
+**/*.o
+**/*.bc
+**/*.so
+**/*.dylib
+results/
+tmp_check/
+log/
+regression.diffs
+regression.out
+docs/
+README.md
+LICENSE
+*.swp
+*.swo
+*~
+.vscode/
+.idea/

Dockerfile

@@ -0,0 +1,63 @@
+ARG PG_MAJOR=17
+
+# ── Stage 1: Compile against PostgreSQL on Ubuntu 22.04 ─────
+# Ubuntu Jammy matches TimescaleDB-HA's glibc (2.35).
+# Building on Debian Bookworm (glibc 2.36) risks symbol version
+# mismatches when the .so loads in TimescaleDB's runtime.
+FROM ubuntu:22.04 AS builder
+
+ARG PG_MAJOR
+ARG DEBIAN_FRONTEND=noninteractive
+
+# PGDG apt repository (same source TimescaleDB-HA uses)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        ca-certificates curl gnupg lsb-release && \
+    curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc \
+        | gpg --dearmor -o /usr/share/keyrings/postgresql.gpg && \
+    echo "deb [signed-by=/usr/share/keyrings/postgresql.gpg] \
+        http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" \
+        > /etc/apt/sources.list.d/pgdg.list && \
+    apt-get update && apt-get install -y --no-install-recommends \
+        postgresql-${PG_MAJOR} \
+        postgresql-server-dev-${PG_MAJOR} \
+        gcc g++ make && \
+    rm -rf /var/lib/apt/lists/*
+
+# Copy source tree (submodule content included as regular files)
+WORKDIR /build/pg_orbit
+COPY . .
+
+ENV PG_CONFIG=/usr/lib/postgresql/${PG_MAJOR}/bin/pg_config
+
+# Build extension
+RUN make PG_CONFIG=${PG_CONFIG}
+
+# Install to system location (needed for installcheck)
+RUN make PG_CONFIG=${PG_CONFIG} install
+
+# Run all 6 regression test suites against a throwaway cluster
+RUN su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/initdb -D /tmp/pgtest" && \
+    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/pg_ctl -D /tmp/pgtest -l /tmp/pgtest.log start" && \
+    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/createuser -s root" && \
+    make PG_CONFIG=${PG_CONFIG} installcheck && \
+    su postgres -c "/usr/lib/postgresql/${PG_MAJOR}/bin/pg_ctl -D /tmp/pgtest stop"
+
+# Capture artifacts under /pg_orbit prefix for the next stage
+RUN make PG_CONFIG=${PG_CONFIG} DESTDIR=/pg_orbit install
+
+
+# ── Stage 2: Minimal artifact (COPY --from target) ──────────
+# ~525 KB total: .so + .control + .sql + init script.
+# Downstream images (TimescaleDB-HA, vanilla PG) pull from here.
+FROM scratch AS artifact
+
+COPY --from=builder /pg_orbit/ /
+COPY docker/020_install_pg_orbit.sh /docker-entrypoint-initdb.d/
+
+
+# ── Stage 3: Standalone dev/test image ───────────────────────
+# Ready-to-run PostgreSQL with pg_orbit pre-installed.
+# For development, CI, and standalone experiments.
+FROM postgres:${PG_MAJOR}-bookworm AS standalone
+
+COPY --from=artifact / /

Makefile

@@ -34,3 +34,33 @@ include $(PGXS)
 # Rule for compiling sat_code C++ files
 $(SAT_CODE_DIR)/%.o: $(SAT_CODE_DIR)/%.cpp
 	$(CXX) $(CXXFLAGS) -fPIC -I$(SAT_CODE_DIR) -c -o $@ $<
+
+# ── Docker packaging ────────────────────────────────────────
+REGISTRY ?= git.supported.systems/warehack.ing
+IMAGE    ?= pg_orbit
+PG_MAJOR ?= 17
+TAG      ?= pg$(PG_MAJOR)
+
+docker-build:
+	docker build --build-arg PG_MAJOR=$(PG_MAJOR) \
+		--target artifact -t $(REGISTRY)/$(IMAGE):$(TAG)-artifact .
+	docker build --build-arg PG_MAJOR=$(PG_MAJOR) \
+		--target standalone -t $(REGISTRY)/$(IMAGE):$(TAG) .
+
+docker-push:
+	docker push $(REGISTRY)/$(IMAGE):$(TAG)-artifact
+	docker push $(REGISTRY)/$(IMAGE):$(TAG)
+
+docker-test:
+	@echo "Smoke-testing standalone image..."
+	docker run --rm -d --name pg_orbit_test \
+		-e POSTGRES_PASSWORD=test $(REGISTRY)/$(IMAGE):$(TAG)
+	@echo "Waiting for PostgreSQL to initialize..."
+	@sleep 10
+	docker exec pg_orbit_test psql -U postgres -tAc \
+		"SELECT tle_norad_id(E'1 25544U 98067A   24001.50000000  .00016717  00000-0  10270-3 0  9025\n2 25544  51.6400 208.9163 0006703  30.1694  61.7520 15.50100486 00001'::tle);" \
+		| grep -q 25544
+	@docker stop pg_orbit_test
+	@echo "Smoke test passed."
+
+.PHONY: docker-build docker-push docker-test

docker/020_install_pg_orbit.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -e
+
+# Create the pg_orbit extension on first container startup.
+# The 020_ prefix orders this after TimescaleDB's own init scripts
+# (000_, 001_, 010_) when used in timescaledb-ha images.
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "${POSTGRES_DB:-postgres}" <<-'EOSQL'
+    CREATE EXTENSION IF NOT EXISTS pg_orbit;
+EOSQL