Technology Tip #2 – Use dive as a tool for optimizing Docker or OCI image

Use dive as a tool for optimizing and exploring a Docker image, layer contents, and discovering ways to shrink the size of your Docker or OCI image

Installation Instructions on Mac Machine

• Install using brew:

brew install dive

Examples of running dive for optimizing Docker images

• Running dive as part of CI pipeline with arguments to fail/pass the build. For example, the below will fail the build if wasted bytes is more than 1024 bytes:

dive --ci --highestWastedBytes 1024 30a68f3b058e

• Other key features of the tool are:
  • Ability to show Docker image content by each layer
  • Ability to indicate change in each layer
  • Ability to estimate Docker image efficiency
  • Ability to integrate with continous integration (CI) tool
  • Ability to inspect multiple images sources and container engines

This technology tip to use dive as a tool for optimizing Docker or OCI image can be used not only for build time but also for runtime integration with CI (continuous integration) tool as a build quality parameter.

References

• dive GitHub Repository

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