package docker import ( "fmt" "os" "github.com/hashicorp/packer/common" "github.com/hashicorp/packer/helper/communicator" "github.com/hashicorp/packer/helper/config" "github.com/hashicorp/packer/packer" "github.com/hashicorp/packer/template/interpolate" "github.com/mitchellh/mapstructure" ) var ( errArtifactNotUsed = fmt.Errorf("No instructions given for handling the artifact; expected commit, discard, or export_path") errArtifactUseConflict = fmt.Errorf("Cannot specify more than one of commit, discard, and export_path") errExportPathNotFile = fmt.Errorf("export_path must be a file, not a directory") errImageNotSpecified = fmt.Errorf("Image must be specified") ) type Config struct { common.PackerConfig `mapstructure:",squash"` Comm communicator.Config `mapstructure:",squash"` Commit bool Discard bool ExportPath string `mapstructure:"export_path"` Image string Pty bool Pull bool RunCommand []string `mapstructure:"run_command"` Volumes map[string]string Privileged bool `mapstructure:"privileged"` Author string Changes []string Message string // This is used to login to dockerhub to pull a private base container. For // pushing to dockerhub, see the docker post-processors Login bool LoginEmail string `mapstructure:"login_email"` LoginPassword string `mapstructure:"login_password"` LoginServer string `mapstructure:"login_server"` LoginUsername string `mapstructure:"login_username"` EcrLogin bool `mapstructure:"ecr_login"` AwsAccessConfig `mapstructure:",squash"` ctx interpolate.Context } func NewConfig(raws ...interface{}) (*Config, []string, error) { c := new(Config) var md mapstructure.Metadata err := config.Decode(c, &config.DecodeOpts{ Metadata: &md, Interpolate: true, InterpolateContext: &c.ctx, InterpolateFilter: &interpolate.RenderFilter{ Exclude: []string{ "run_command", }, }, }, raws...) if err != nil { return nil, nil, err } // Defaults if len(c.RunCommand) == 0 { c.RunCommand = []string{"-d", "-i", "-t", "{{.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 } // Default to the normal Docker type if c.Comm.Type == "" { c.Comm.Type = "docker" } var errs *packer.MultiError if es := c.Comm.Prepare(&c.ctx); len(es) > 0 { errs = packer.MultiErrorAppend(errs, es...) } if c.Image == "" { errs = packer.MultiErrorAppend(errs, errImageNotSpecified) } if (c.ExportPath != "" && c.Commit) || (c.ExportPath != "" && c.Discard) || (c.Commit && c.Discard) { errs = packer.MultiErrorAppend(errs, errArtifactUseConflict) } if c.ExportPath == "" && !c.Commit && !c.Discard { errs = packer.MultiErrorAppend(errs, errArtifactNotUsed) } if c.ExportPath != "" { if fi, err := os.Stat(c.ExportPath); err == nil && fi.IsDir() { errs = packer.MultiErrorAppend(errs, errExportPathNotFile) } } if c.EcrLogin && c.LoginServer == "" { errs = packer.MultiErrorAppend(errs, fmt.Errorf("ECR login requires login server to be provided.")) } if errs != nil && len(errs.Errors) > 0 { return nil, nil, errs } return c, nil, nil }