A GitLab runner helper upgrade is correct and one autoscaled runner still pulls the old helper
The helper image is updated, but one image family still rewrites helper pulls to the old mirror prefix.
CI/CDIntermediate
A BuildKit registry cache export passes locally and fails in CI
Community-field CI/CD problem inspired by BuildKit registry discussions where HEAD media type handling broke cache export.
CI/CDIntermediate
A BuildKit bake job rebuilds every stage
The pipeline still publishes images, yet every run is cold because the effective cache path changed after a rootless runner refactor.
CI/CDIntermediate
A rootless BuildKit runner pushes images fine and later fails cache export
The build succeeds, yet cache export becomes unreliable because the runner writes metadata under a session-scoped runtime path that does not survive between jobs.