What are the best practices for writing a Dockerfile?

What are the best practices for writing a Dockerfile?

Some best practices include using a minimal base image, leveraging caching, and organizing layers efficiently.

Can you explain why using a minimal base image is important?

Using a minimal base image reduces the attack surface and speeds up build times by minimizing unnecessary files.

What do you mean by organizing layers efficiently?

Organizing layers efficiently means grouping commands that change less frequently together to take advantage of Docker's caching.

Are there any specific commands I should avoid in a Dockerfile?

Yes, avoid using 'RUN apt-get update' and 'RUN apt-get install' in the same layer to prevent cache invalidation.