- Modified the GitHub Actions workflow to streamline the deployment process by installing Docker directly and using shell commands for building and pushing images.
- Changed the base image for the backend Dockerfile from `python:3.11-slim` to `python:alpine` for a smaller footprint.
- Updated the frontend Dockerfile to use `node:23-alpine` instead of `node:24-alpine`, and refactored the production stage to use `node:slim`. Added a script for runtime environment variable injection.
