Fix dockerfile

services/auth/Dockerfile

@@ -1,3 +1,9 @@
+# Add this stage at the top of each service Dockerfile
+FROM python:3.11-slim as shared
+WORKDIR /shared
+COPY shared/ /shared/
+
+# Then your main service stage
 FROM python:3.11-slim
 
 WORKDIR /app
@@ -9,16 +15,16 @@ RUN apt-get update && apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements
-COPY requirements.txt .
+COPY services/auth/requirements.txt .
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy shared libraries
-COPY shared/ /app/shared/
+# Copy shared libraries from the shared stage
+COPY --from=shared /shared /app/shared
 
 # Copy application code
-COPY . .
+COPY services/auth/ .
 
 # Add shared libraries to Python path
 ENV PYTHONPATH="/app:/app/shared:$PYTHONPATH"