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# STAGE 1 — BUILD (instala dependências)

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FROM python:3.11-slim AS builder

ENV PYTHONDONTWRITEBYTECODE=1

ENV PYTHONUNBUFFERED=1

# Instalar dependências do sistema

RUN apt-get update && apt-get install -y --no-install-recommends \

build-essential \

libpq-dev \

&& rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copia apenas requirements para cache eficiente

COPY requirements ./requirements

# Instala dependências em uma pasta isolada

RUN pip install --upgrade pip && \

pip install --prefix=/install -r requirements/production.txt

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# STAGE 2 — FINAL IMAGE (produção)

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FROM python:3.11-slim AS final

ENV PYTHONDONTWRITEBYTECODE=1

ENV PYTHONUNBUFFERED=1

# Instalar dependências essenciais para Postgres

RUN apt-get update && apt-get install -y --no-install-recommends \

libpq5 \

netcat-openbsd \

&& rm -rf /var/lib/apt/lists/*

WORKDIR /app

# Copia dependências já instaladas

COPY --from=builder /install /usr/local

# Copia o projeto inteiro

COPY . .

# Criar pastas obrigatórias de produção

RUN mkdir -p /app/staticfiles

# ENTRYPOINT

COPY entrypoint.sh /entrypoint.sh

RUN chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]

# Expor porta da aplicação

EXPOSE 8000

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# Comando final — Gunicorn em modo produção

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CMD ["gunicorn", "config.wsgi:application", \

"--bind", "0.0.0.0:8000", \

"--workers", "4", \

"--threads", "2", \

"--timeout", "120"]