chore: baseline plantilla-proyectos como base del CRM

backend/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Instalar dependencias del sistema
+RUN apt-get update && apt-get install -y \
+    gcc \
+    postgresql-client \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Instalar dependencias para wkhtmltopdf y reportes PDF
+RUN apt-get update \
+    && apt-get install -y \
+        xvfb \
+        fontconfig \
+        fonts-dejavu-core \
+        libfontconfig1 \
+        libxrender1 \
+        libxtst6 \
+        libxi6 \
+        libxrandr2 \
+        ca-certificates \
+        libjpeg62-turbo \
+        libpng16-16 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Instalar wkhtmltopdf binario oficial con soporte para footers/headers
+# TARGETARCH permite amd64 y arm64 (Apple Silicon)
+ARG TARGETARCH
+RUN curl -k -L -o /tmp/wkhtmltox.deb "https://github.com/wkhtmltopdf/packaging/releases/download/0.12.6.1-3/wkhtmltox_0.12.6.1-3.bookworm_${TARGETARCH}.deb" \
+    && apt-get update \
+    && apt-get install -y /tmp/wkhtmltox.deb \
+    && rm /tmp/wkhtmltox.deb \
+    && rm -rf /var/lib/apt/lists/* \
+    && wkhtmltopdf --version
+
+
+# Copiar requirements
+COPY requirements.txt .
+
+# Instalar dependencias Python
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Entrypoint (espera Postgres/Keycloak; no montar desde el host)
+COPY docker-entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+# Copiar código
+COPY . .
+
+# Jenkins / CI pasan --build-arg APP_VERSION=…; debe quedar en ENV para runtime (API /version, OpenAPI, etc.)
+ARG APP_VERSION=dev-local
+ENV APP_VERSION=${APP_VERSION}
+
+# Exponer puerto
+EXPOSE 8000
+
+ENTRYPOINT ["/entrypoint.sh"]
+
+# Comando por defecto
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--reload"]