tiltfile: Add disable_push option to build_docker function

internal/build/image_builder.go

@@ -126,14 +126,18 @@ func (ib *ImageBuilder) push(ctx context.Context, refs container.TaggedRefs, ps
 	ps.StartPipelineStep(ctx, "Pushing %s", container.FamiliarString(refs.LocalRef))
 	defer ps.EndPipelineStep(ctx)
 
-	cbSkip := false
 	if iTarget.IsCustomBuild() {
-		cbSkip = iTarget.CustomBuildInfo().SkipsPush()
+		if iTarget.CustomBuildInfo().SkipsPush() {
+			ps.Printf(ctx, "Skipping push: custom_build() configured to handle push itself")
+			return nil
+		}
 	}
 
-	if cbSkip {
-		ps.Printf(ctx, "Skipping push: custom_build() configured to handle push itself")
-		return nil
+	if iTarget.IsDockerBuild() {
+		if iTarget.DockerBuildInfo().DisablePush {
+			ps.Printf(ctx, "Skipping push: docker_build() configured to handle push itself")
+			return nil
+		}
 	}
 
 	// We can also skip the push of the image if it isn't used

internal/tiltfile/api/__init__.py

@@ -198,7 +198,8 @@ def docker_build(ref: str,
                  cache_from: Union[str, List[str]] = [],
                  pull: bool = False,
                  platform: str = "",
-                 extra_hosts: Union[str, List[str]] = []) -> None:
+                 extra_hosts: Union[str, List[str]] = [],
+                 disable_push: bool = False) -> None:
   """Builds a docker image.
 
   The invocation
@@ -244,6 +245,7 @@ def docker_build(ref: str,
     pull: Force pull the latest version of parent images. Equivalent to the ``docker build --pull`` flag.
     platform: Target platform for build (e.g. ``linux/amd64``). Defaults to the value of the ``DOCKER_DEFAULT_PLATFORM`` environment variable. Equivalent to the ``docker build --platform`` flag.
     extra_hosts: Add a custom host-to-IP mapping (host:ip). Equivalent to the ``docker build --add-host`` flag.
+    disable_push: whether Tilt should push the image to the registry that the Kubernetes cluster has access to. Set this to true if you don't want tilt to push the image to the cluster registry
   """
   pass
 

internal/tiltfile/docker.go

@@ -116,7 +116,7 @@ func (s *tiltfileState) dockerBuild(thread *starlark.Thread, fn *starlark.Builti
 	var buildArgs value.StringStringMap
 	var network, platform value.Stringable
 	var ssh, secret, extraTags, cacheFrom, extraHosts value.StringOrStringList
-	var matchInEnvVars, pullParent bool
+	var matchInEnvVars, pullParent, disablePush bool
 	var overrideArgsVal starlark.Sequence
 	if err := s.unpackArgs(fn.Name(), args, kwargs,
 		"ref", &dockerRef,
@@ -140,6 +140,7 @@ func (s *tiltfileState) dockerBuild(thread *starlark.Thread, fn *starlark.Builti
 		"pull?", &pullParent,
 		"platform?", &platform,
 		"extra_hosts?", &extraHosts,
+		"disable_push?", &disablePush,
 	); err != nil {
 		return nil, err
 	}
@@ -242,6 +243,7 @@ func (s *tiltfileState) dockerBuild(thread *starlark.Thread, fn *starlark.Builti
 		dbBuildPath:      context,
 		configurationRef: container.NewRefSelector(ref),
 		dbBuildArgs:      buildArgsList,
+		disablePush:      disablePush,
 		liveUpdate:       liveUpdate,
 		matchInEnvVars:   matchInEnvVars,
 		sshSpecs:         ssh.Values,

internal/tiltfile/tiltfile_state.go

@@ -1457,6 +1457,7 @@ func (s *tiltfileState) imgTargetsForDepsHelper(mn model.ManifestName, imageMapD
 				ExtraTags:          image.extraTags,
 				ContextIgnores:     contextIgnores,
 				ExtraHosts:         image.extraHosts,
+				DisablePush:        image.disablePush,
 			}
 			iTarget = iTarget.WithBuildDetails(model.DockerBuild{DockerImageSpec: spec})
 		case CustomBuild:

internal/tiltfile/tiltfile_test.go

@@ -4010,6 +4010,21 @@ k8s_yaml('foo.yaml')
 		m.ImageTargets[0].DockerBuildInfo().Args)
 }
 
+func TestDockerBuildDisablePush(t *testing.T) {
+
+	f := newFixture(t)
+
+	f.dockerfile("Dockerfile")
+	f.yaml("foo.yaml", deployment("foo", image("gcr.io/foo")))
+	f.file("Tiltfile", `
+docker_build('gcr.io/foo', '.', disable_push=True)
+k8s_yaml('foo.yaml')
+`)
+
+	f.load()
+	f.assertNextManifest("foo", db(image("gcr.io/foo"), disablePush(true)))
+}
+
 func TestCustomBuildEntrypoint(t *testing.T) {
 	f := newFixture(t)
 
@@ -6103,6 +6118,8 @@ func (f *fixture) assertNextManifest(name model.ManifestName, opts ...interface{
 					lu := image.LiveUpdateSpec
 					assert.False(f.t, liveupdate.IsEmptySpec(lu))
 					assert.Equal(f.t, matcher, lu)
+				case disablePushHelper:
+					assert.Equal(f.t, matcher.disabled, image.DockerBuildInfo().DisablePush)
 				default:
 					f.t.Fatalf("unknown dbHelper matcher: %T %v", matcher, matcher)
 				}

pkg/apis/core/v1alpha1/dockerimage_types.go

@@ -181,6 +181,11 @@ type DockerImageSpec struct {
 	//
 	// Equivalent to `--add-host` in the Docker CLI.
 	ExtraHosts []string `json:"extraHosts,omitempty" protobuf:"bytes,17,opt,name=extraHosts"`
+
+	// Whether to push the image to the registry
+
+	// +optional
+	DisablePush bool `json:"disablePush,omitempty" protobuf:"varint,18,opt,name=disablePush"`
 }
 
 var _ resource.Object = &DockerImage{}