Medium-Easy Understand Kubernetes & Docker open_ended

In a Dockerfile, why should you COPY package.json and run npm install BEFORE copying the rest of the source code?

Understand — Tests comprehension and ability to explain concepts.

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This question is from the Kubernetes & Docker topic (DevOps & Containers).

What is the key difference between a Docker image and a Docker container?

Which Docker networking mode allows a container to share the host machine's network stack directly, without NAT?

What is the purpose of the 'depends_on' key with 'condition: service_healthy' in Docker Compose?

Which Kubernetes control plane component is responsible for scheduling pods onto nodes?

Explain the difference between a Kubernetes Deployment's 'maxSurge' and 'maxUnavailable' rolling update parameters.