This pull request includes several changes to improve the build and deployment processes for the backend and frontend services, as well as updates to the configuration and dependencies of these services.

Build and Deployment Improvements:

• Added .dockerignore files for the backend and frontend services to exclude unnecessary files from Docker builds. (.dockerignore, apps/backend/.dockerignore, apps/frontend/.dockerignore) [1] [2] [3]
• Created Dockerfiles for the backend and frontend services to streamline the build and deployment processes. (apps/backend/Dockerfile, apps/frontend/Dockerfile) [1] [2]
• Added GitHub Actions workflows to automate the build and testing processes for the backend, frontend, and heartbeat services. (.github/workflows/build-frontend.yaml, .github/workflows/build-heartbeat.yaml, .github/workflows/build_test-backend.yaml) [1] [2] [3]

Configuration Updates:

• Updated environment configuration files to reflect new port settings and database host changes. (apps/backend/.env.development, apps/frontend/.env.development) [1] [2]
• Added link-workspace-packages=true to .npmrc to enable linking of workspace packages. (.npmrc)

Dependency and Script Updates:

• Updated package.json files for the backend and frontend services to reflect new dependencies and script changes, including the addition of testcontainers and updates to Jest configurations. (apps/backend/package.json, apps/frontend/package.json) [1] [2]
• Modified import statements to use lodash-es instead of lodash in the frontend service. (apps/frontend/pages/room.vue)

Test Setup and Teardown:

• Added setup and teardown scripts for Jest to manage the lifecycle of test containers. (apps/backend/test/setup.ts, apps/backend/test/teardown.ts) [1] [2]
• Removed the old global setup script for Jest. (apps/backend/test/setupGlobal.ts)

These changes collectively enhance the development workflow, improve build efficiency, and ensure a more consistent environment across different stages of development and deployment.