Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func EnsureFinalStageName ¶
EnsureFinalStageName adds "AS <name>" to the last FROM if it doesn't have one. Returns (stageName, modifiedContent, error). If the stage already has a name, modifiedContent is empty.
func RemoveSyntaxVersion ¶
RemoveSyntaxVersion strips the # syntax=... directive from Dockerfile content.
Types ¶
type Dockerfile ¶
type Dockerfile struct {
// Raw is the original Dockerfile content.
Raw string
// Preamble holds ARG instructions before the first FROM.
Preamble *Preamble
// Stages is the ordered list of build stages.
Stages []*Stage
// StagesByTarget maps stage names to stages for quick lookup.
StagesByTarget map[string]*Stage
}
Dockerfile represents a parsed Dockerfile.
func Parse ¶
func Parse(content string) (*Dockerfile, error)
Parse parses Dockerfile content into a structured Dockerfile.
func (*Dockerfile) FindBaseImage ¶
func (d *Dockerfile) FindBaseImage(buildArgs map[string]string, target string) string
FindBaseImage resolves the base image for the given target stage, expanding ARG variables and following stage references. If target is empty, the last stage is used.
func (*Dockerfile) FindUserStatement ¶
func (d *Dockerfile) FindUserStatement(buildArgs, baseImageEnv map[string]string, target string) string
FindUserStatement returns the last USER instruction in the target stage chain, resolving ARG/ENV variables. Returns empty string if no USER found.
type Preamble ¶
type Preamble struct {
Args []instructions.KeyValuePairOptional
}
Preamble holds instructions before the first FROM (typically ARG).
type Stage ¶
type Stage struct {
// Image is the base image (FROM value).
Image string
// Target is the stage name (AS value), empty if unnamed.
Target string
// Envs are ENV instructions in this stage.
Envs []instructions.KeyValuePair
// Args are ARG instructions in this stage.
Args []instructions.KeyValuePairOptional
// Users are USER instructions in this stage.
Users []string
// Commands is the list of parsed instructions in this stage.
Commands []instructions.Command
}
Stage represents a single build stage (FROM ... to next FROM or EOF).
Source Files