hello-docker
A super simple demo to document my journey to reasonably sized docker containers.
Task at Hand
Build a docker container as small as possible for the simple http server in main.go.
Yeah... Why?
Actually because I was shocked how big images can become when you use the same image to build and run you app.
I thought to myself, now we have it all in containers, but it takes ages to download these things from a repo and to start them just because they are huge?! Not a good practice.
Docker Build
We will dockerize our little http server with different dockerfiles and look at the sizes of the resulting containers.
Size Comparison
| Artefact | Size (MB) |
|---|---|
| Binary | |
| Build/run container | |
| Multistage distroless | |
| Multistage from scratch |
Further Areas of Interest
It is obvious that size plays a role in everything related to downloading and deploying images. What is the impact on starting time?
