Enum StageParent

pub enum StageParent<'a> {
    Image(&'a ImageRef),
    Stage(usize),
    Scratch,
}

The parent image of a Docker build stage

Variants

Image(&'a ImageRef)

An externally-built image, potentially from a remote registry

Stage(usize)

An index of a previous stage within the current Dockerfile

Scratch

The empty (scratch) parent image

Trait Implementations

impl<'a> Clone for StageParent<'a>

fn clone(&self) -> StageParent<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for StageParent<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Display for StageParent<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> PartialEq for StageParent<'a>

fn eq(&self, other: &StageParent<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Eq for StageParent<'a>

impl<'a> StructuralPartialEq for StageParent<'a>