feat: PostgreSQL image with TimescaleDB, VectorChord, pgvector

- Multi-stage Dockerfile for optimized image size (676MB vs 2GB)
- Support for PostgreSQL 15, 16, 17, 18
- TimescaleDB 2.24.0, VectorChord 1.0.0, pgvector 0.8.1
- Auto-creation of extensions on first startup
- CI/CD with tests for all versions
- OCI labels and healthcheck included

.gitea/workflows/docker-build.yml

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+name: 🚀 Docker Build and Push
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pg_version: [15, 16, 17, 18]
+    steps:
+      - name: 📥 Checkout code
+        uses: actions/checkout@v4
+
+      - name: 🛠️ Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: 🔐 Login to Gitea Registry
+        uses: docker/login-action@v3
+        with:
+          registry: gitea.killinger.fr
+          username: maxime.killinger
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: 📦 Build Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          load: true
+          build-args: |
+            PG_VERSION=${{ matrix.pg_version }}
+          tags: |
+            postgres-ts-vectors:pg${{ matrix.pg_version }}-test
+
+      - name: 🧪 Test image - Start container
+        run: |
+          docker run -d --name test-pg${{ matrix.pg_version }} \
+            -e POSTGRES_PASSWORD=testpass \
+            postgres-ts-vectors:pg${{ matrix.pg_version }}-test
+          
+          # Wait for PostgreSQL to be ready
+          echo "Waiting for PostgreSQL to start..."
+          for i in {1..30}; do
+            if docker exec test-pg${{ matrix.pg_version }} pg_isready -U postgres > /dev/null 2>&1; then
+              echo "PostgreSQL is ready!"
+              break
+            fi
+            sleep 2
+          done
+
+      - name: 🧪 Test image - Verify extensions
+        run: |
+          # Wait a bit more for init scripts to complete
+          sleep 5
+          
+          # Check extensions are installed
+          RESULT=$(docker exec test-pg${{ matrix.pg_version }} psql -U postgres -t -c \
+            "SELECT count(*) FROM pg_extension WHERE extname IN ('timescaledb', 'vector', 'vchord');")
+          
+          EXTENSIONS=$(echo $RESULT | tr -d ' ')
+          echo "Found $EXTENSIONS extensions"
+          
+          if [ "$EXTENSIONS" -eq "3" ]; then
+            echo "✅ All 3 extensions are installed!"
+          else
+            echo "❌ Expected 3 extensions, found $EXTENSIONS"
+            docker exec test-pg${{ matrix.pg_version }} psql -U postgres -c \
+              "SELECT extname, extversion FROM pg_extension;"
+            exit 1
+          fi
+          
+          # Show extension versions
+          docker exec test-pg${{ matrix.pg_version }} psql -U postgres -c \
+            "SELECT extname, extversion FROM pg_extension WHERE extname IN ('timescaledb', 'vector', 'vchord');"
+
+      - name: 🧹 Cleanup test container
+        if: always()
+        run: docker rm -f test-pg${{ matrix.pg_version }} || true
+
+      - name: 🚀 Push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          build-args: |
+            PG_VERSION=${{ matrix.pg_version }}
+          tags: |
+            gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:pg${{ matrix.pg_version }}
+
+      - name: 🏷️ Tag latest (PG18 only)
+        if: matrix.pg_version == 18
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          build-args: |
+            PG_VERSION=18
+          tags: |
+            gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:latest
+
+

.gitignore

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+.DS_Store
+*.log
+tmp/
+build/
+.env

Dockerfile

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+# syntax=docker/dockerfile:1
+ARG PG_VERSION=18
+
+# =============================================================================
+# Builder stage - Compile TimescaleDB
+# =============================================================================
+FROM tensorchord/vchord-postgres:pg${PG_VERSION}-v1.0.0 AS builder
+
+USER root
+
+# Install build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git \
+    build-essential \
+    cmake \
+    libssl-dev \
+    libkrb5-dev \
+    postgresql-server-dev-$PG_MAJOR \
+    && rm -rf /var/lib/apt/lists/*
+
+# Build TimescaleDB from source (stable release)
+ARG TIMESCALEDB_VERSION=2.24.0
+WORKDIR /build/timescaledb
+RUN git clone --branch ${TIMESCALEDB_VERSION} --depth 1 https://github.com/timescale/timescaledb.git . \
+    && ./bootstrap -DREGRESS_CHECKS=OFF -DWARNINGS_AS_ERRORS=OFF \
+    && cd build && make -j$(nproc) && make install DESTDIR=/tmp/timescaledb
+
+# =============================================================================
+# Final stage - Clean runtime image
+# =============================================================================
+FROM tensorchord/vchord-postgres:pg${PG_VERSION}-v1.0.0 AS final
+
+# OCI Labels
+LABEL org.opencontainers.image.title="TimescaleDB + VectorChord + pgvector"
+LABEL org.opencontainers.image.description="PostgreSQL with TimescaleDB, VectorChord, and pgvector extensions pre-installed"
+LABEL org.opencontainers.image.source="https://gitea.killinger.fr/maxime.killinger/postgres-ts-vectors"
+LABEL org.opencontainers.image.vendor="Maxime Killinger"
+LABEL org.opencontainers.image.licenses="Apache-2.0"
+LABEL org.opencontainers.image.base.name="tensorchord/vchord-postgres:pg${PG_VERSION}-v1.0.0"
+
+# Copy TimescaleDB from builder
+COPY --from=builder /tmp/timescaledb/usr/lib/postgresql/ /usr/lib/postgresql/
+COPY --from=builder /tmp/timescaledb/usr/share/postgresql/ /usr/share/postgresql/
+
+# Add init script for auto-extension creation
+COPY init-extensions.sh /docker-entrypoint-initdb.d/
+RUN chmod +x /docker-entrypoint-initdb.d/init-extensions.sh
+
+# Healthcheck
+HEALTHCHECK --interval=30s --timeout=5s --start-period=60s --retries=3 \
+    CMD pg_isready -U postgres || exit 1
+
+USER postgres
+
+# Preload required libraries
+CMD ["postgres", "-c", "shared_preload_libraries=timescaledb,vchord"]

README.md

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+# TimescaleDB + VectorChord + pgvector
+
+[![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:
+
+- **[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
+
+## Supported PostgreSQL Versions
+
+| Tag | PostgreSQL | TimescaleDB | VectorChord | pgvector |
+|-----|------------|-------------|-------------|----------|
+| `pg15` | 15 | 2.24.0 | 1.0.0 | 0.8.1 |
+| `pg16` | 16 | 2.24.0 | 1.0.0 | 0.8.1 |
+| `pg17` | 17 | 2.24.0 | 1.0.0 | 0.8.1 |
+| `pg18`, `latest` | 18 | 2.24.0 | 1.0.0 | 0.8.1 |
+
+## Quick Start
+
+```bash
+docker run -d \
+  --name my-postgres \
+  -e POSTGRES_PASSWORD=mysecretpassword \
+  -p 5432:5432 \
+  gitea.killinger.fr/maxime.killinger/postgres-ts-vectors:latest
+```
+
+All extensions are **automatically created** on first startup.
+
+## Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `POSTGRES_PASSWORD` | PostgreSQL password (required) | - |
+| `POSTGRES_USER` | PostgreSQL user | `postgres` |
+| `POSTGRES_DB` | Default database | `postgres` |
+
+## Extensions Usage
+
+### TimescaleDB
+
+```sql
+-- Create a hypertable
+CREATE TABLE conditions (
+  time TIMESTAMPTZ NOT NULL,
+  device_id INTEGER,
+  temperature DOUBLE PRECISION
+);
+
+SELECT create_hypertable('conditions', 'time');
+```
+
+### VectorChord / pgvector
+
+```sql
+-- Create a table with vector embeddings
+CREATE TABLE documents (
+  id SERIAL PRIMARY KEY,
+  content TEXT,
+  embedding vector(1536)
+);
+
+-- Create an index for fast similarity search
+CREATE INDEX ON documents USING vchordrq (embedding vector_l2_ops);
+
+-- Query similar documents
+SELECT * FROM documents
+ORDER BY embedding <-> '[0.1, 0.2, ...]'
+LIMIT 10;
+```
+
+## Building Locally
+
+```bash
+# Build for PG18
+docker build --build-arg PG_VERSION=18 -t my-image:pg18 .
+
+# Build for PG16
+docker build --build-arg PG_VERSION=16 -t my-image:pg16 .
+```
+
+## License
+
+This project is licensed under the Apache 2.0 License.
+
+- TimescaleDB: [Timescale License](https://github.com/timescale/timescaledb/blob/main/LICENSE)
+- VectorChord: [Apache 2.0](https://github.com/tensorchord/VectorChord/blob/main/LICENSE)
+- pgvector: [PostgreSQL License](https://github.com/pgvector/pgvector/blob/master/LICENSE)

build.sh

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+#!/bin/bash
+# Build script for TimescaleDB + VectorChord + pgvector
+
+PG_VERSION=${1:-18}
+IMAGE_NAME="timescaledb-vectorchord"
+
+echo "Building for PostgreSQL ${PG_VERSION}..."
+
+docker build \
+  --build-arg PG_VERSION=${PG_VERSION} \
+  -t ${IMAGE_NAME}:pg${PG_VERSION} \
+  .
+
+echo "Build complete: ${IMAGE_NAME}:pg${PG_VERSION}"

init-extensions.sh

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+#!/bin/bash
+set -e
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+    CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
+    CREATE EXTENSION IF NOT EXISTS vector;
+    CREATE EXTENSION IF NOT EXISTS vchord CASCADE;
+EOSQL
+
+echo "Extensions timescaledb, vector, and vchord have been created."

init-timescale.sh

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+#!/bin/bash
+# This script is run during the first database initialization
+# TimescaleDB requires being preloaded - this message is informational only
+echo "TimescaleDB is installed. Remember to set shared_preload_libraries = 'timescaledb' in postgresql.conf or use the POSTGRES_SHARED_PRELOAD_LIBRARIES environment variable."