2.2. Building reproducible container images with container tools

Red Hat Enterprise Linux (RHEL) now supports reproducible container builds using Podman and Buildah, reducing image changes with consistent inputs over time. This new feature decreases data pulled from registries when updating images, which is crucial for supply chain security, reliable software deployment, and effective debugging. Reproducible builds for RHEL containers reduce registry storage, create smaller update payloads, and enable faster downloads by ensuring image layers remain consistent. Previously, challenges with tarball creation and escalating container image sizes led to increased storage burdens and unnecessary layer pulls, even when underlying data remained unchanged, hindering faster updates in environments like rhel-bootc and RHEL AI.