Dockerfile

FROM python:3.14-slim

ARG PG_MAJOR_VERSION=18

ENV TZ=Asia/Shanghai
ENV PYTHONUNBUFFERED=1
ENV PYTHONIOENCODING=utf-8
ENV PG_VERSION=${PG_MAJOR_VERSION}

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    wget \
    ca-certificates \
    gnupg \
    lsb-release \
    tzdata \
    && rm -rf /var/lib/apt/lists/*

RUN mkdir -p /etc/apt/keyrings \
    && wget --quiet -O /etc/apt/keyrings/postgresql.asc https://www.postgresql.org/media/keys/ACCC4CF8.asc \
    && echo "deb [signed-by=/etc/apt/keyrings/postgresql.asc] http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list

RUN apt-get update && apt-get install -y --no-install-recommends \
    postgresql-client-${PG_MAJOR_VERSION} \
    postgresql-client-common \
    && ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
    && echo $TZ > /etc/timezone \
    && rm -rf /var/lib/apt/lists/* \
    && apt-get clean

COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip \
    && pip install --no-cache-dir -r requirements.txt

RUN mkdir -p /backups

COPY Scripts/lib ./lib
COPY Scripts/main.py ./

RUN chmod +x main.py

RUN pg_dump --version && psql --version

ENTRYPOINT ["python3", "main.py", "backup"]