Docker image for Godot builds, current version is 3.4.4
The OS in this image is Alpine Linux from frolvlad/alpine-glibc, this should provide smaller image sizes.
Output godot help
docker run lerneca/godot godot -h
Please also see lerneca/godot-docker-android for Andrdoid builds
Builds available at: https://hub.docker.com/r/lerneca/godot