Diagnóstico y fix SQL Server: SERVERNAME, TDS_Version, Puerto explicitos

backend/Dockerfile

@@ -4,22 +4,21 @@ FROM python:3.10-slim
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 
-# Instalar dependencias del sistema requeridas para pyodbc y msodbcsql
+# Instalar dependencias del sistema requeridas para pyodbc y FreeTDS
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     curl \
-    gnupg \
+    gcc \
+    g++ \
     unixodbc \
     unixodbc-dev \
+    freetds-bin \
+    freetds-dev \
+    tdsodbc \
     && rm -rf /var/lib/apt/lists/*
 
-# Agregar la firma de Microsoft y el repositorio correspondiente a la versión de Debian instalada
-RUN curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor -o /usr/share/keyrings/microsoft-prod.gpg \
-    && . /etc/os-release \
-    && curl -fsSL https://packages.microsoft.com/config/debian/$VERSION_ID/prod.list > /etc/apt/sources.list.d/mssql-release.list \
-    && apt-get update \
-    && ACCEPT_EULA=Y apt-get install -y --no-install-recommends msodbcsql17 \
-    && rm -rf /var/lib/apt/lists/*
+# Configurar FreeTDS globalmente con versión TDS 7.3 y charset UTF-8
+RUN mkdir -p /etc/freetds && echo "[global]\n\ttds version = 7.3\n\tclient charset = UTF-8\n" > /etc/freetds/freetds.conf
 
 # Establecer directorio de trabajo
 WORKDIR /app