Update Dockerfile.test

backend/tests/Dockerfile.test

@@ -1,26 +1,20 @@
 # Use an official Python runtime as a parent image
-FROM python:3.9-buster
+FROM python:3.9-slim
 
-# Set the working directory
+# Set the working directory in the container
 WORKDIR /app
 
-# Add Google's public DNS for name resolution
-RUN echo "nameserver 8.8.8.8" > /etc/resolv.conf
-
-# Install system dependencies (including gcc and libpq-dev)
-RUN apt-get update && \
-    apt-get install -y apt-transport-https gcc libpq-dev && \
-    rm -rf /var/lib/apt/lists/*
+# Set environment variable to ensure unbuffered output (for better logging)
+ENV PYTHONUNBUFFERED 1
 
-# Copy the requirements file into the container and install dependencies
+# Copy the requirements file into the container
 COPY requirements.txt /app/requirements.txt
+
+# Install dependencies (including coverage)
 RUN pip install --no-cache-dir -r /app/requirements.txt coverage
 
-# Copy the rest of the application files
+# Copy the entire codebase into the container
 COPY . /app/
 
-# Set environment variables
-ENV PYTHONUNBUFFERED 1
-
-# Run tests with coverage
-CMD ["python", "manage.py", "test", "--coverage"]
+# Run the tests with coverage
+CMD ["python", "manage.py", "test", "--coverage", "--coverage-report=coverage.xml"]