DeepCopy makes a deep copy from src into dst.

DeferContext returns a context for containerd cleanup operations in defer.

GenerateID generates a random unique id.

InStringSlice checks whether a string is inside a string slice.

MergeStringSlices merges 2 string slices into one and remove duplicated elements.

NamespacedContext returns a context with kubernetes namespace set.

NormalizeImageRef normalizes the image reference following the docker convention.

SubtractStringSlice subtracts string from string slice.

WithNamespace adds kubernetes namespace to the context.