Image size
Image size measures an image’s storage requirements or its physical and pixel dimensions, depending on context.
Learn Docker in a Month of Lunches, Second Edition
Image size is the amount of storage represented by a container image and its layers.
- How it is used
- Uses image size to check Docker build efficiency and compare runtime base-image choices.
- How deep it goes
- Explains layer-by-layer size behavior through builds and history inspection, without detailing Docker’s storage implementation.
- Examples
- Compares copied-then-deleted files, Java 22 base-image variants, and a Go toolset image against its application image.
- What you can do after
- Diagnose/debug with it by comparing `docker image ls` output and `docker history`, then choosing files and base images more selectively.
Read how Learn Docker in a Month of Lunches, Second Edition explains image size →
Build Financial Software with Generative AI (From Scratch)
Image size is the amount of storage space required by a container image.
- How it is used
- Reduces Docker application storage requirements by comparing images and selecting smaller compatible base images.
- How deep it goes
- Compares measured image reductions, base-image trade-offs, layers, cleanup, and caching without detailing complete Alpine migration steps.
- Examples
- Uses docker image ls, API, web, and Postgres images, Alpine and slim tags, Docker Scout analysis, and Dockerfile cleanup.
- What you can do after
- Operate Docker images more efficiently by measuring sizes and selecting compatible base images and layer arrangements.
Read how Build Financial Software with Generative AI (From Scratch) explains image size →
Related concepts
- pixelmeasures · A pixel is either a discrete sample carrying visual information at a position in a digital image or a reference unit used to express rendered dimensions.
- gpu video memoryuses · GPU memory is memory accessible to a graphics processing unit for storing data and computation state used in graphics or other workloads.
- aspect ratioconfigures · An aspect ratio is the proportional relationship between the width and height of an object, image, or rectangular area.
- Stable Diffusionconfigures · Stable Diffusion is a family of latent diffusion models that generates and edits images from text and other conditioning inputs.
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