Week 5

Running Containers

Dockerfiles

Docker Compose

Image Registries

Practice

Assignment

Cloud Track

Under construction

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Implementation plan:

• What is a Dockerfile — instructions to build an image
• Key instructions: FROM, WORKDIR, COPY, RUN, EXPOSE, CMD, ENTRYPOINT
• CMD vs ENTRYPOINT — when to use each
• Image layers: how Docker caching works, ordering instructions for cache efficiency
• .dockerignore — excluding files from the build context
• Building an image: docker build -t name:tag .
• Tagging and versioning images
• Practice: write a Dockerfile for a simple Node.js app, build and run it

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