Answer
A Docker image is a read-only template containing application code, runtime, dependencies, filesystem, and configuration needed to run a container.
Quick Answer
A Docker image is a read-only, layered snapshot of your application — it includes the OS base, runtime, dependencies, and your code. Think of it as a blueprint. When you run it, Docker creates a live, writable container from it. The same image can spin up hundreds of identical containers.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ