Smaller Docker Images

[walterjgsp]

Description

After some research I found that's possible to create really small images in Java using Graal VM. Today we are being able to create a 187mb image for the server and Graal VM native image promise to get us a <30mb version. This is a big improvement for someone who has limited space and memory on the Amazon Lightsail VM.

[walterjgsp]

In order to build a GraalVM docker image with a native server, we need to do the following tasks:

• Locally install GraalVM and build a native image running
• Change Dockerfile to run the built image locally from docker
• Update Github action to replicate the build using GraalVM
• Test locally the image that was built by Github Actions

After all those steps are done we can check the result by testing the size of the image and if all functionalities are still working.

Links

• How to build a Ktor server using GraalVM: https://ktor.io/docs/graalvm.html
• Ktor Native repo with GraalVM: https://github.com/viniciusccarvalho/ktor-native

[walterjgsp]

The current GraalVM solution doesn't solve my problems. It's impossible to use Ktor. Let's try to find another solution or reach this issue after some time.