reduce container image size

[jessefarinacci]

Infracost providers a Docker image for user convenience: https://hub.docker.com/r/infracost/infracost 👍

The image is quite large by modern standards:

$ docker image ls
infracost/infracost                     0.10.29           b69bd0436d1a   5 days ago          1.11GB
infracost/infracost                     0.10.28           ea17ae9d8cb0   4 weeks ago         1.11GB
infracost/infracost                     0.10.27           82cabc659f35   4 weeks ago         1.12GB
infracost/infracost                     0.10.26           d6fafabec5bd   6 weeks ago         1.11GB
infracost/infracost                     0.10.25           71440496b450   6 weeks ago         1.11GB
infracost/infracost                     0.10.20           67271e15e39c   4 months ago        1.11GB
infracost/infracost                     0.10.15           0ed29f1c4cee   8 months ago        1.1GB
infracost/infracost                     0.10.10           320192726e50   13 months ago       1.1GB
infracost/infracost                     0.10.5            13c4c9fbb932   14 months ago       1.1GB
infracost/infracost                     0.10.1            7f329e1ee902   15 months ago       1.09GB

There are alternatives reduce the size of the image considerably: https://github.com/minidocks/images/tree/master/infracost

$ docker image ls | grep infra
infracost/infracost                     latest            b69bd0436d1a   5 days ago          1.11GB
minidocks/infracost                     latest            753aed9906c4   2 hours ago         62.7MB

This issue requests reducing the container image size. For reference, and perhaps revealing the root cause:

$ docker image ls | grep interesting
infracost/infracost                     latest            b69bd0436d1a   5 days ago          1.11GB
python                                  latest            79d47d6fa793   12 days ago         1.01GB
golang                                  latest            b1c406e816b2   2 weeks ago         822MB
ubuntu                                  latest            6a47e077731f   3 weeks ago         69.2MB

[aliscott]

Thanks @jessefarinacci. I agree it's too large. We have some work in progress to reduce the dependencies in it in #2617, but we probably won't get time to wrap this up until October. This should reduce the size down to 114MB.

In the meantime I'd recommend using the infracost/infracost:ci-* images which are around 325MB in size (still too big, but at least a bit better).

[jessefarinacci]

Thank you @aliscott! I subscribed to that other issue. I'm OK with closing this issue if that's your recommendation. Thx!

[aliscott]

Thanks @jessefarinacci!