[DEPLOYMENT-001] Fix PYTHONPATH to use only /app for correct module resolution (fix) | ApprovalToken: AT-202512310628

docker/Dockerfile

@@ -143,13 +143,13 @@ RUN chmod -R 755 /app && \
     chmod -R 777 /app/data /app/logs /app/uploaded_files
 
 # Environment variables
-# PYTHONPATH=/app allows importing peikarband package from /app/peikarband/
-# and peikarband.peikarband from /app/peikarband/peikarband/
-# Note: Python adds current directory (.) to sys.path automatically, but PYTHONPATH entries come first
+# PYTHONPATH=/app allows importing peikarband from /app/peikarband/
+# which makes peikarband.peikarband available from /app/peikarband/peikarband/
+# Note: Current directory (.) is added to sys.path, but PYTHONPATH entries come first
 # REFLEX_DIR points to the directory containing rxconfig.py
 ENV PYTHONUNBUFFERED=1 \
     PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONPATH=/app:/app/peikarband \
+    PYTHONPATH=/app \
     PATH="/app/.venv/bin:$PATH" \
     REFLEX_DIR=/app/peikarband \
     NODE_ENV=production