package docker import ( "fmt" "github.com/mitchellh/packer/common" "github.com/mitchellh/packer/packer" ) type Config struct { common.PackerConfig `mapstructure:",squash"` ExportPath string `mapstructure:"export_path"` Image string Pull bool RunCommand []string `mapstructure:"run_command"` tpl *packer.ConfigTemplate } func NewConfig(raws ...interface{}) (*Config, []string, error) { c := new(Config) md, err := common.DecodeConfig(c, raws...) if err != nil { return nil, nil, err } c.tpl, err = packer.NewConfigTemplate() if err != nil { return nil, nil, err } c.tpl.UserVars = c.PackerUserVars // Defaults if len(c.RunCommand) == 0 { c.RunCommand = []string{ "run", "-d", "-i", "-t", "-v", "{{.Volumes}}", "{{.Image}}", "/bin/bash", } } // Default Pull if it wasn't set hasPull := false for _, k := range md.Keys { if k == "Pull" { hasPull = true break } } if !hasPull { c.Pull = true } errs := common.CheckUnusedConfig(md) templates := map[string]*string{ "export_path": &c.ExportPath, "image": &c.Image, } for n, ptr := range templates { var err error *ptr, err = c.tpl.Process(*ptr, nil) if err != nil { errs = packer.MultiErrorAppend( errs, fmt.Errorf("Error processing %s: %s", n, err)) } } if c.ExportPath == "" { errs = packer.MultiErrorAppend(errs, fmt.Errorf("export_path must be specified")) } if c.Image == "" { errs = packer.MultiErrorAppend(errs, fmt.Errorf("image must be specified")) } if errs != nil && len(errs.Errors) > 0 { return nil, nil, errs } return c, nil, nil }