feat: add pg_textsearch extension

pg_textsearch/Dockerfile

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+# SPDX-FileCopyrightText: Copyright © contributors to CloudNativePG, established as CloudNativePG a Series of LF Projects, LLC.
+# SPDX-License-Identifier: Apache-2.0
+
+
+ARG BASE=ghcr.io/cloudnative-pg/postgresql:18-minimal-trixie
+FROM $BASE AS builder
+
+ARG PG_MAJOR
+ARG EXT_VERSION
+ARG TARGETARCH
+
+USER 0
+
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends ca-certificates wget unzip dpkg; \
+	case "${TARGETARCH}" in amd64|arm64) ;; *) echo "Unsupported TARGETARCH=${TARGETARCH}" >&2; exit 1 ;; esac; \
+	ZIP_URL="https://github.com/timescale/pg_textsearch/releases/download/v${EXT_VERSION}/pg-textsearch-v${EXT_VERSION}-pg${PG_MAJOR}-${TARGETARCH}.zip"; \
+	DEB_FILE="pg-textsearch-postgresql-${PG_MAJOR}_${EXT_VERSION}-1_${TARGETARCH}.deb"; \
+	LICENSE_TGZ_URL="https://github.com/timescale/pg_textsearch/releases/download/v${EXT_VERSION}/pg_textsearch-${EXT_VERSION}.tar.gz"; \
+	mkdir -p /tmp/pg_textsearch && cd /tmp/pg_textsearch; \
+	wget -O pg_textsearch.zip "$ZIP_URL"; \
+	unzip -q pg_textsearch.zip "$DEB_FILE"; \
+	dpkg-deb -x "./$DEB_FILE" /tmp/pkgroot; \
+	mkdir -p /out/lib /out/share/extension "/out/licenses/pg-textsearch-postgresql-${PG_MAJOR}"; \
+	cp -a "/tmp/pkgroot/usr/lib/postgresql/${PG_MAJOR}/lib/pg_textsearch"* /out/lib/; \
+	cp -a "/tmp/pkgroot/usr/share/postgresql/${PG_MAJOR}/extension/pg_textsearch"* /out/share/extension/; \
+	wget -qO- "$LICENSE_TGZ_URL" | tar -xzO "pg_textsearch-${EXT_VERSION}/LICENSE" > "/out/licenses/pg-textsearch-postgresql-${PG_MAJOR}/copyright"; \
+	cd /; \
+	rm -rf /tmp/pg_textsearch; \
+	rm -rf /var/lib/apt/lists/*
+
+FROM scratch
+ARG PG_MAJOR
+
+COPY --from=builder /out/licenses/pg-textsearch-postgresql-${PG_MAJOR}/copyright /licenses/pg-textsearch-postgresql-${PG_MAJOR}/
+COPY --from=builder /out/lib/pg_textsearch* /lib/
+COPY --from=builder /out/share/extension/pg_textsearch* /share/extension/
+
+USER 65532:65532

pg_textsearch/README.md

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+# PgTextsearch
+
+
+[pg_textsearch](https://github.com/timescale/pg_textsearch) is an extension that adds
+**ranked full-text search (BM25)** to PostgreSQL.
+
+## Usage
+
+### 1. Add the pg_textsearch extension image to your Cluster
+
+Define the `pg_textsearch` extension under the `postgresql.extensions` section of
+your `Cluster` resource. For example:
+
+```yaml
+apiVersion: postgresql.cnpg.io/v1
+kind: Cluster
+metadata:
+  name: cluster-pg-textsearch
+spec:
+  imageName: ghcr.io/cloudnative-pg/postgresql:18-minimal-trixie
+  instances: 1
+
+  storage:
+    size: 1Gi
+
+  postgresql:
+    extensions:
+    - name: pg-textsearch
+      image:
+        # renovate: suite=trixie-pgdg depName=postgresql-18-pg_textsearch
+        reference: ghcr.io/cloudnative-pg/pg_textsearch:0.4.1-18-trixie
+```
+
+### 2. Enable the extension in a database
+
+You can install `pg_textsearch` in a specific database by creating or updating a
+`Database` resource. For example, to enable it in the `app` database:
+
+```yaml
+apiVersion: postgresql.cnpg.io/v1
+kind: Database
+metadata:
+  name: cluster-pg-textsearch-app
+spec:
+  name: app
+  owner: app
+  cluster:
+    name: cluster-pg-textsearch
+  extensions:
+  - name: pg_textsearch
+    # renovate: suite=trixie-pgdg depName=postgresql-18-pg_textsearch
+    version: '0.4.1'
+```
+
+### 3. Verify installation
+
+Once the database is ready, connect to it with `psql` and run:
+
+```sql
+\dx
+```
+
+You should see `pg_textsearch` listed among the installed extensions.
+
+## Contributors
+
+This extension is maintained by:
+
+- Bryan Wong (@ImSingee)
+
+The maintainers are responsible for:
+
+- Monitoring upstream releases and security vulnerabilities.
+- Ensuring compatibility with supported PostgreSQL versions.
+- Reviewing and merging contributions specific to this extension's container
+  image and lifecycle.
+
+---
+
+## Licenses and Copyright
+
+This container image contains software that may be licensed under various
+open-source licenses.
+
+All relevant license and copyright information for the `pg_textsearch` extension
+and its dependencies are bundled within the image at:
+
+```text
+/licenses/
+```
+
+By using this image, you agree to comply with the terms of the licenses
+contained therein.

pg_textsearch/metadata.hcl

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+# SPDX-FileCopyrightText: Copyright © contributors to CloudNativePG, established as CloudNativePG a Series of LF Projects, LLC.
+# SPDX-License-Identifier: Apache-2.0
+metadata = {
+  name                     = "pg_textsearch"
+  sql_name                 = "pg_textsearch"
+  image_name               = "pg_textsearch"
+  shared_preload_libraries = []
+  extension_control_path   = []
+  dynamic_library_path     = []
+  ld_library_path          = []
+  auto_update_os_libs      = false
+
+  versions = {
+    trixie = {
+        // renovate: suite=trixie-pgdg depName=postgresql-18-pg_textsearch
+        "18" = "0.4.1"
+    }
+    bookworm = {
+        // renovate: suite=bookworm-pgdg depName=postgresql-18-pg_textsearch
+        "18" = "0.4.1"
+    }
+  }
+}