railpack

1package plan2 3import (4	"strings"5 6	"github.com/railwayapp/railpack/core/app"7 8	// this is the native dockerignore parser used by buildkit9	// https://github.com/moby/buildkit/blob/master/frontend/dockerfile/dockerignore/dockerignore_deprecated.go10	"github.com/moby/patternmatcher/ignorefile"11)12 13// parses a .dockerignore file from the app directory. assumes the file exists.14func checkAndParseDockerignore(app *app.App) ([]string, error) {15	content, err := app.ReadFile(".dockerignore")16	if err != nil {17		return nil, err18	}19 20	reader := strings.NewReader(content)21	patterns, err := ignorefile.ReadAll(reader)22	if err != nil {23		return nil, err24	}25 26	return patterns, nil27}28 29type DockerignoreContext struct {30	Excludes []string31	HasFile  bool32}33 34func NewDockerignoreContext(app *app.App) (*DockerignoreContext, error) {35	if !app.HasFile(".dockerignore") {36		return &DockerignoreContext{}, nil37	}38 39	excludes, err := checkAndParseDockerignore(app)40	if err != nil {41		return nil, err42	}43 44	return &DockerignoreContext{45		Excludes: excludes,46		HasFile:  true,47	}, nil48}49