Base Definition Migration Guide (December 2025)
The base configuration syntax using os and tag is deprecated.
Deprecated Configuration
Previously, the base layer was configured using an os along with a tag, like this:
base:
os: ubuntu 24.04
tag: 1.2
New Configuration
Now, the base layer is configured using an image along with a config.
base
image: ubuntu:24.04
config: rwx/base 1.0.0
The image property references a container image, so it now contains a colon
where the previous value for os contained a space.
Context on the Change
https://www.rwx.com/blog/new-base-config-to-run-directly-from-container-images