Docker Role

Docker containerizes applications and their dependencies, ensuring they run consistently across environments.

In Development:

• Provides isolated environments (e.g., for different projects).
• Simplifies onboarding (e.g., no need to manually install dependencies).

In Deployment:

• Ensures consistent environments between dev and production.
• Integrates with orchestration tools (e.g., Kubernetes) for scalability.

Example Dockerfile:

FROM node:14
WORKDIR /app
COPY . .
RUN npm install
CMD ["npm", "start"]