feat(docker): add PostGIS and remove unstable PG18 support

- Install PostGIS (postgresql--postgis-3) in the final image.

- Add postgis and postgis_topology to init-extensions.sh.

- Add test script for PostGIS to the CI workflow.

- Update README.md to reflect PostGIS integration.

- Remove PG18 from CI matrix because of ABI incompatibility between TimescaleDB headers and the vchord-postgres PG18 runtime (missing palloc0_mul). PG18 support will be restored when VectorChord releases a stable PG18 image.

.gitea/workflows/docker-build.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        pg_version: [15, 16, 17, 18]
+        pg_version: [15, 16, 17]
     steps:
       - name: 📥 Checkout code
         uses: https://github.com/actions/checkout@v4
@@ -69,6 +69,9 @@ jobs:
       - name: "🧪 Test 4: Hybrid Scenarios"
         run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-4-hybrid.sql
 
+      - name: "🧪 Test 5: PostGIS"
+        run: docker exec test-pg${{ matrix.pg_version }} psql -U postgres -f /tmp/tests/test-5-postgis.sql
+
       - name: 🧹 Cleanup test container
         if: always()
         run: docker rm -f test-pg${{ matrix.pg_version }} || true
@@ -83,14 +86,14 @@ jobs:
           tags: |
             gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:pg${{ matrix.pg_version }}
 
-      - name: 🏷️ Tag latest (PG18 only)
+      - name: 🏷️ Tag latest (PG17 only)
-        if: matrix.pg_version == 18
+        if: matrix.pg_version == 17
         uses: https://github.com/docker/build-push-action@v5
         with:
           context: .
           push: true
           build-args: |
-            PG_VERSION=18
+            PG_VERSION=17
           tags: |
             gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:latest
 

Dockerfile

@@ -31,8 +31,8 @@ RUN git clone --branch ${TIMESCALEDB_VERSION} --depth 1 https://github.com/times
 FROM tensorchord/vchord-postgres:pg${PG_VERSION}-v1.1.1 AS final
 
 # OCI Labels
-LABEL org.opencontainers.image.title="TimescaleDB + VectorChord + pgvector"
+LABEL org.opencontainers.image.title="TimescaleDB + VectorChord + pgvector + PostGIS"
-LABEL org.opencontainers.image.description="PostgreSQL with TimescaleDB, VectorChord, and pgvector extensions pre-installed"
+LABEL org.opencontainers.image.description="PostgreSQL with TimescaleDB, VectorChord, pgvector, and PostGIS extensions pre-installed"
 LABEL org.opencontainers.image.source="https://gitea.killinger.fr/maxime.killinger/postgres-ts-vectors"
 LABEL org.opencontainers.image.vendor="Maxime Killinger"
 LABEL org.opencontainers.image.licenses="Apache-2.0"
@@ -42,6 +42,15 @@ LABEL org.opencontainers.image.base.name="tensorchord/vchord-postgres:pg${PG_VER
 COPY --from=builder /tmp/timescaledb/usr/lib/postgresql/ /usr/lib/postgresql/
 COPY --from=builder /tmp/timescaledb/usr/share/postgresql/ /usr/share/postgresql/
 
+USER root
+
+# Install PostGIS
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    postgresql-$PG_MAJOR-postgis-3 \
+    postgresql-$PG_MAJOR-postgis-3-scripts \
+    postgis \
+    && rm -rf /var/lib/apt/lists/*
+
 # Add init script for auto-extension creation
 COPY init-extensions.sh /docker-entrypoint-initdb.d/
 RUN sed -i 's/\r$//' /docker-entrypoint-initdb.d/init-extensions.sh && \

README.md

@@ -1,21 +1,21 @@
-# TimescaleDB + VectorChord + pgvector
+# TimescaleDB + VectorChord + pgvector + PostGIS
 
 [![Build Status](https://gitea.killinger.fr/maxime.killinger/postgres-ts-vectors/actions/workflows/docker-build.yml/badge.svg)](https://gitea.killinger.fr/maxime.killinger/postgres-ts-vectors/actions)
 
-Docker image combining **PostgreSQL** with three powerful extensions:
+Docker image combining **PostgreSQL** with four powerful extensions:
 
 - **[TimescaleDB](https://www.timescale.com/)** - Time-series database extension
 - **[VectorChord](https://vectorchord.ai/)** - High-performance vector similarity search
 - **[pgvector](https://github.com/pgvector/pgvector)** - Open-source vector similarity search
+- **[PostGIS](https://postgis.net/)** - Geographic objects support
 
 ## Supported PostgreSQL Versions
 
-| Tag | PostgreSQL | TimescaleDB | VectorChord | pgvector |
+| Tag | PostgreSQL | TimescaleDB | VectorChord | pgvector | PostGIS |
-|-----|------------|-------------|-------------|----------|
+|-----|------------|-------------|-------------|----------|---------|
-| `pg15` | 15 | 2.28.3 | 1.1.1 | 0.8.1 |
+| `pg15` | 15 | 2.28.3 | 1.1.1 | 0.8.1 | 3.x |
-| `pg16` | 16 | 2.28.3 | 1.1.1 | 0.8.1 |
+| `pg16` | 16 | 2.28.3 | 1.1.1 | 0.8.1 | 3.x |
-| `pg17` | 17 | 2.28.3 | 1.1.1 | 0.8.1 |
+| `pg17`, `latest` | 17 | 2.28.3 | 1.1.1 | 0.8.1 | 3.x |
-| `pg18`, `latest` | 18 | 2.28.3 | 1.1.1 | 0.8.1 |
 
 ## Quick Start
 

init-extensions.sh

@@ -5,6 +5,8 @@ psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-E
     CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
     CREATE EXTENSION IF NOT EXISTS vector;
     CREATE EXTENSION IF NOT EXISTS vchord CASCADE;
+    CREATE EXTENSION IF NOT EXISTS postgis;
+    CREATE EXTENSION IF NOT EXISTS postgis_topology;
 EOSQL
 
-echo "Extensions timescaledb, vector, and vchord have been created."
+echo "Extensions timescaledb, vector, vchord, and postgis have been created."

tests/test-5-postgis.sql

@@ -0,0 +1,28 @@
+-- Test 5: PostGIS
+\set ON_ERROR_STOP on
+
+CREATE TABLE spatial_data (
+    id serial PRIMARY KEY,
+    geom geometry(Point, 4326)
+);
+
+INSERT INTO spatial_data (geom) VALUES (ST_GeomFromText('POINT(-71.060316 48.432044)', 4326));
+INSERT INTO spatial_data (geom) VALUES (ST_GeomFromText('POINT(-71.059773 48.432867)', 4326));
+
+DO $$
+DECLARE
+    dist float;
+BEGIN
+    SELECT ST_Distance(
+        (SELECT geom FROM spatial_data WHERE id = 1),
+        (SELECT geom FROM spatial_data WHERE id = 2)
+    ) INTO dist;
+
+    IF dist IS NULL THEN
+        RAISE EXCEPTION 'PostGIS distance calculation failed';
+    END IF;
+    RAISE NOTICE 'PostGIS Check: OK, distance is %', dist;
+END
+$$;
+
+DROP TABLE spatial_data;