# PostgreSQL 15 with pgvector + pg_bigm extensions
# 用于 AI 临床研究平台的向量检索和中文关键词检索
#
# 扩展版本：
# - pgvector: 0.8.1 (向量相似度搜索)
# - pg_bigm: 1.2 (中日韩文本全文搜索)
#
# 构建命令：
#   docker build -f Dockerfile.postgres-with-extensions -t ai-clinical-postgres:v1.1 .
#
# 使用方法：
#   1. 构建镜像后，修改 docker-compose.yml:
#      image: ai-clinical-postgres:v1.1
#   2. 重启服务：docker compose down && docker compose up -d
#   3. 启用扩展：
#      docker exec -it ai-clinical-postgres psql -U postgres -d ai_clinical_research -c "CREATE EXTENSION IF NOT EXISTS pg_bigm;"

FROM pgvector/pgvector:pg15

# 使用阿里云镜像源加速（如果在国内）
# RUN sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list.d/*.sources 2>/dev/null || true

# 安装编译依赖
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    postgresql-server-dev-15 \
    wget \
    ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# 下载并编译 pg_bigm
# pg_bigm 是专门为中日韩（CJK）字符优化的全文搜索扩展
RUN cd /tmp \
    && wget -q https://github.com/pgbigm/pg_bigm/archive/refs/tags/v1.2-20200228.tar.gz \
    && tar -xzf v1.2-20200228.tar.gz \
    && cd pg_bigm-1.2-20200228 \
    && make USE_PGXS=1 \
    && make USE_PGXS=1 install \
    && cd / \
    && rm -rf /tmp/pg_bigm* /tmp/v1.2-20200228.tar.gz

# 清理编译依赖
RUN apt-get purge -y --auto-remove \
    build-essential \
    postgresql-server-dev-15 \
    wget \
    && rm -rf /var/lib/apt/lists/*

# 添加初始化脚本（自动创建扩展）
COPY docker-init-extensions.sql /docker-entrypoint-initdb.d/

# 暴露端口
EXPOSE 5432