Add pg_bigm

.github/workflows/pg_build.yml

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+name: Build and Push Docker Image of PostgreSQL with pg_bigm
+
+on:
+  push:
+    branches:
+      - 'main'
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    env:
+      IMAGE_NAME: postgres_bigm
+      IMAGE_TAG: 12-latest
+    permissions:
+      packages: write
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v6
+      with:
+        push: true
+        tags: ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}

Dockerfile

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+FROM postgres:12
+
+RUN apt update
+RUN apt install -y postgresql-server-dev-12 make gcc curl libicu-dev
+
+RUN cd /tmp && \
+    curl -L -O https://github.com/pgbigm/pg_bigm/archive/refs/tags/v1.2-20240606.tar.gz && \
+    tar zxf v1.2-20240606.tar.gz && \
+    cd pg_bigm-1.2-20240606 && \
+    make USE_PGXS=1 && \
+    make USE_PGXS=1 install && \
+    rm -rf /tmp/pg_bigm-1.2-20240606 /tmp/v1.2-20240606.tar.gz
+
+RUN mkdir -p /docker-entrypoint-initdb.d
+COPY ./initdb-pg_bigm.sh /docker-entrypoint-initdb.d/10_pg_bigm.sh
+# RUN echo shared_preload_libraries='pg_bigm' >> /var/lib/postgresql/data/postgresql.conf

initdb-pg_bigm.sh

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+#!/bin/sh
+
+set -e
+
+# Perform all actions as $POSTGRES_USER
+export PGUSER="$POSTGRES_USER"
+
+# Create the 'template_pg_bigm' template db
+"${psql[@]}" <<- 'EOSQL'
+CREATE DATABASE template_pg_bigm IS_TEMPLATE true;
+EOSQL
+
+# Load pg_bigm into both template_database and $POSTGRES_DB
+for DB in template_pg_bigm "$POSTGRES_DB"; do
+	echo "Loading pg_bigm extensions into $DB"
+	"${psql[@]}" --dbname="$DB" <<-'EOSQL'
+		CREATE EXTENSION IF NOT EXISTS pg_bigm;
+EOSQL
+done