11mo ago

How I reduced the size of my very first published docker image by 40% - A lesson in dockerizing shell scripts

bhupesh.me How I reduced the size of my very first published docker image by 40% - A lesson in dockerizing shell scripts

My learnings from publishing my first ever Dockerfile for ugit (a shell script based tool to undo git command) and writing the most optimized dockerfile for it.

11 comments

This is cool but it'll be a nightmare to update.
Also, chances are that if you use Alpine the person using your image already has the base layer downloaded, so your image might actually be "bigger" for most people.
- Yeah in a PR I would probably reject this for being too clever. Before clicking I expected the image to start at 100mb or more, but it's already under 50, who cares at this point?
  
  Man, "too clever" is a phrase that always throws me for a loop, even though I understand what is meant by it; over the years, as I grow wiser, I learn to be less clever. Still weird to think of it this way though

Dockerizing a shell script?
- The art of turning a 500-line text file into a 50MB tarball. Welcome to the future :(
- Yeah, wtf, why would you do that?
  
  Environments like Kubernetes only run containers so you would deploy any shell script with containers as well.
  
  So you know what your dependencies are.

17+ MB for a shell script.
Then asks:
Could we reduce the size further
No. No certainly not. I would see no way to make a 500 lines text file use less than 17 MB of space.

11 comments