diff --git a/command/command.go b/command/command.go
deleted file mode 100644
index 37b8770..0000000
--- a/command/command.go
+++ /dev/null
@@ -1,102 +0,0 @@
-package command
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"strings"
-
-	"github.com/pkg/errors"
-)
-
-type Command struct {
-	username      string
-	password      string
-	spec          string
-	platforms     []string
-	target        string
-	template      string
-	path          string
-	ignoreMissing bool
-}
-
-func New(opts ...Option) *Command {
-	c := &Command{}
-
-	for _, opt := range opts {
-		opt(c)
-	}
-
-	return c
-}
-
-func (c *Command) Exec() error {
-	args := []string{}
-
-	if c.username != "" {
-		args = append(args, fmt.Sprintf("--username=%s", c.username))
-	}
-
-	if c.password != "" {
-		args = append(args, fmt.Sprintf("--password=%s", c.password))
-	}
-
-	args = append(args, "push")
-
-	if c.spec != "" {
-		tmpfile, err := ioutil.TempFile(c.path, "manifest-")
-
-		if err != nil {
-			return errors.Wrap(err, "failed to create tempfile")
-		}
-
-		defer os.Remove(tmpfile.Name())
-
-		if _, err := tmpfile.Write([]byte(c.spec)); err != nil {
-			return errors.Wrap(err, "failed to write tempfile")
-		}
-
-		if err := tmpfile.Close(); err != nil {
-			return errors.Wrap(err, "failed to close temp file")
-		}
-
-		args = append(args, "from-spec")
-		args = append(args, tmpfile.Name())
-	} else {
-		args = append(args, "from-args")
-
-		if len(c.platforms) != 0 {
-			args = append(args, fmt.Sprintf("--platforms=%s", strings.Join(c.platforms, ",")))
-		}
-
-		if c.target != "" {
-			args = append(args, fmt.Sprintf("--target=%s", c.target))
-		}
-
-		if c.template != "" {
-			args = append(args, fmt.Sprintf("--template=%s", c.template))
-		}
-	}
-
-	if c.ignoreMissing {
-		args = append(args, "--ignore-missing")
-	}
-
-	cmd := exec.Command(
-		"manifest-tool",
-		args...,
-	)
-
-	buf := bytes.NewBufferString("")
-	cmd.Stdout = io.MultiWriter(os.Stdout, buf)
-	cmd.Stderr = io.MultiWriter(os.Stderr, buf)
-
-	if c.path != "" {
-		cmd.Dir = c.path
-	}
-
-	return cmd.Run()
-}
diff --git a/command/option.go b/command/option.go
deleted file mode 100644
index 379c9f1..0000000
--- a/command/option.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package command
-
-type Option func(*Command)
-
-func WithUsername(val string) Option {
-	return func(t *Command) {
-		t.username = val
-	}
-}
-
-func WithPassword(val string) Option {
-	return func(t *Command) {
-		t.password = val
-	}
-}
-
-func WithSpec(val string) Option {
-	return func(t *Command) {
-		t.spec = val
-	}
-}
-
-func WithPlatforms(val []string) Option {
-	return func(t *Command) {
-		t.platforms = val
-	}
-}
-
-func WithTarget(val string) Option {
-	return func(t *Command) {
-		t.target = val
-	}
-}
-
-func WithTemplate(val string) Option {
-	return func(t *Command) {
-		t.template = val
-	}
-}
-
-func WithPath(val string) Option {
-	return func(t *Command) {
-		t.path = val
-	}
-}
-
-func IgnoreMissing() Option {
-	return func(t *Command) {
-		t.ignoreMissing = true
-	}
-}
diff --git a/plugin.go b/plugin.go
index 4abee2a..19b77b9 100644
--- a/plugin.go
+++ b/plugin.go
@@ -1,12 +1,15 @@
 package main
 
 import (
-	"errors"
+	"fmt"
+	"io/ioutil"
 	"log"
+	"os"
+	"os/exec"
 	"strings"
 
 	"github.com/drone/drone-template-lib/template"
-	"github.com/drone-plugins/drone-manifest/command"
+	"github.com/pkg/errors"
 )
 
 type (
@@ -58,28 +61,53 @@ type (
 )
 
 func (p *Plugin) Exec() error {
-	opts := make([]command.Option, 0)
+	args := []string{}
 
 	if p.Config.Username == "" {
 		return errors.New("you must provide a username")
 	} else {
-		opts = append(opts, command.WithUsername(p.Config.Username))
+		args = append(args, fmt.Sprintf("--username=%s", p.Config.Username))
 	}
 
 	if p.Config.Password == "" {
 		return errors.New("you must provide a password")
 	} else {
-		opts = append(opts, command.WithPassword(p.Config.Password))
+		args = append(args, fmt.Sprintf("--password=%s", p.Config.Password))
 	}
 
+	args = append(args, "push")
+
 	if p.Config.Spec != "" {
-		spec, err := template.RenderTrim(p.Config.Spec, p)
+		raw, err := ioutil.ReadFile(p.Config.Spec)
 
 		if err != nil {
-			return err
+			return errors.Wrap(err, "failed to read template")
 		}
 
-		opts = append(opts, command.WithSpec(spec))
+		spec, err := template.RenderTrim(string(raw), p)
+
+		if err != nil {
+			return errors.Wrap(err, "failed to render template")
+		}
+
+		tmpfile, err := ioutil.TempFile(p.Build.Path, "manifest-")
+
+		if err != nil {
+			return errors.Wrap(err, "failed to create tempfile")
+		}
+
+		defer os.Remove(tmpfile.Name())
+
+		if _, err := tmpfile.Write([]byte(spec)); err != nil {
+			return errors.Wrap(err, "failed to write tempfile")
+		}
+
+		if err := tmpfile.Close(); err != nil {
+			return errors.Wrap(err, "failed to close tempfile")
+		}
+
+		args = append(args, "from-spec")
+		args = append(args, tmpfile.Name())
 
 		log.Printf(
 			"pushing by spec",
@@ -88,19 +116,19 @@ func (p *Plugin) Exec() error {
 		if len(p.Config.Platforms) == 0 {
 			return errors.New("you must provide platforms")
 		} else {
-			opts = append(opts, command.WithPlatforms(p.Config.Platforms))
+			args = append(args, fmt.Sprintf("--platforms=%s", strings.Join(p.Config.Platforms, ",")))
 		}
 
 		if p.Config.Target == "" {
 			return errors.New("you must provide a target")
 		} else {
-			opts = append(opts, command.WithTarget(p.Config.Target))
+			args = append(args, fmt.Sprintf("--target=%s", p.Config.Target))
 		}
 
 		if p.Config.Template == "" {
 			return errors.New("you must provide a template")
 		} else {
-			opts = append(opts, command.WithTemplate(p.Config.Template))
+			args = append(args, fmt.Sprintf("--template=%s", p.Config.Template))
 		}
 
 		log.Printf(
@@ -112,12 +140,20 @@ func (p *Plugin) Exec() error {
 	}
 
 	if p.Config.IgnoreMissing {
-		opts = append(opts, command.IgnoreMissing())
+		args = append(args, "--ignore-missing")
 	}
 
+	cmd := exec.Command(
+		"manifest-tool",
+		args...,
+	)
+
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
 	if p.Build.Path != "" {
-		opts = append(opts, command.WithPath(p.Build.Path))
+		cmd.Dir = p.Build.Path
 	}
 
-	return command.New(opts...).Exec()
+	return cmd.Run()
 }