1. Standardizing Development
- Use Dockerfile + docker-compose to unify local and server environments.
- Reduces “works on my machine” bugs and speeds up onboarding.
- Example: backend (Spring Boot + DB + Redis), frontend (Node.js + React/Vue).
- Optimize PC resources: only run needed containers, limit CPU/memory.
2. Isolated Testing with Testcontainers
- Automatically spins up containers (DB, MQ) for JUnit tests.
- Ensures all developers and CI use the same environment.
- Cleans up after tests, preventing leftover state.
- Use only for integration tests to avoid slowdowns.
3. Production Tips
- Logging: Output to STDOUT → view with
docker logs -f.
- Resource limits:
--memory and --cpus prevent one container from hogging resources.
- Security: Limit Docker socket access, scan images, keep passwords in
.env or secret managers.
4. Team Collaboration
- Share
Dockerfile and docker-compose.yml via Git.
- Keep
.env private.
- Integrate Docker into CI/CD pipelines.
- Use Testcontainers to test realistic environments before deployment.
✅ Benefits
- Faster deployment, reproducible environments, fewer bugs, easier team collaboration.