Docker app build

Gopkg.toml

@@ -21,6 +21,19 @@
 
 required = ["github.com/wadey/gocovmerge"]
 
+[[constraint]]
+  name = "github.com/docker/buildx"
+  version = "=v0.3.1"
+
+[[override]]
+  name = "github.com/moby/buildkit"
+  version = "=v0.6.2"
+
+[[override]]
+  name = "github.com/jaguilar/vt100"
+  source = "github.com/tonistiigi/vt100"
+  revision = "ad4c4a5743050fb7f88ce968dca9422f72a0e3f2"
+
 # We need runc at least 0.0.9 to get otherwise missing stubs for non-linux platforms.
 # We need > 0.1.1 as it depends on uppercase Sirupsen/logrus.
 [[override]]

e2e/build_test.go

@@ -0,0 +1,46 @@
+package e2e
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"path"
+	"strings"
+	"testing"
+
+	"github.com/deislabs/cnab-go/bundle"
+	"gotest.tools/assert"
+	"gotest.tools/icmd"
+)
+
+func TestBuild(t *testing.T) {
+	runWithDindSwarmAndRegistry(t, func(info dindSwarmAndRegistryInfo) {
+		cmd := info.configuredCmd
+
+		testDir := path.Join("testdata", "build")
+		cmd.Command = dockerCli.Command("app", "build", path.Join(testDir, "single"), "single:1.0.0")
+		icmd.RunCmd(cmd).Assert(t, icmd.Success)
+
+		var cfg string
+		for _, s := range cmd.Env {
+			if strings.HasPrefix(s, "DOCKER_CONFIG=") {
+				cfg = s[14:]
+			}
+		}
+		if cfg == "" {
+			t.Fatalf("Failed to retrieve docker config folder")
+		}
+
+		f := path.Join(cfg, "app", "bundles", "docker.io", "library", "single", "_tags", "1.0.0.json")
+		data, err := ioutil.ReadFile(f)
+		assert.NilError(t, err)
+		var bndl bundle.Bundle
+		err = json.Unmarshal(data, &bndl)
+		assert.NilError(t, err)
+
+		built := []string{bndl.InvocationImages[0].Digest, bndl.Images["web"].Digest, bndl.Images["worker"].Digest}
+		for _, ref := range built {
+			cmd.Command = dockerCli.Command("inspect", ref)
+			icmd.RunCmd(cmd).Assert(t, icmd.Success)
+		}
+	})
+}