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Reducing docker image size

Afonso Mukai requested to merge 357_reduce_docker_footprint into master

Created by: rerpha

Description of work

I have reduced the docker image size for the filewriter by reducing the amount of layers in the image.

I'm also looking at a really odd tool called docker-slim which seems to massively reduce the image size so might be worth having a look at this and testing with it.

Issue

Closes #357 (closed)

Acceptance Criteria

To test: run docker build . in the top directory and use docker images to compare size.

I will push to docker hub if this gets merged.

Unit Tests

None

Other

None

Code Review (To be filled in by the reviewer only)

  • Is the code of an acceptable quality?
  • Do the changes function as described and is it robust?

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Indicate if you think the code should be reviewed in a Thursday code review session.

  • Recommend for group code review

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