diff --git a/pkg/api/types.go b/pkg/api/types.go
index f5afca5..412dc13 100644
--- a/pkg/api/types.go
+++ b/pkg/api/types.go
@@ -176,6 +176,11 @@ type Registry struct {
 	// that are tagged "app: k3d".
 	Labels map[string]string `json:"labels,omitempty" yaml:"labels,omitempty"`
 
+	// Environment vars to use for registry container (optional).
+	//
+	// Can be used to change some parameters likes REGISTRY_HTTP_ADDR, REGISTRY_PROXY_REMOTEURL
+	Env []string `json:"env,omitempty" yaml:"env,omitempty"`
+
 	// Image to use for registry container (optional).
 	//
 	// Can be used to provide an alternate image or use a different registry
@@ -223,6 +228,9 @@ type RegistryStatus struct {
 	// Labels attached to the running container.
 	Labels map[string]string `json:"labels,omitempty" yaml:"labels,omitempty"`
 
+	// Env attached to the running container.
+	Env []string `json:"env,omitempty" yaml:"env,omitempty"`
+
 	// Image for the running container.
 	Image string `json:"image,omitempty" yaml:"image,omitempty"`
 }
diff --git a/pkg/registry/registry.go b/pkg/registry/registry.go
index c7bdd04..9ab9e1e 100644
--- a/pkg/registry/registry.go
+++ b/pkg/registry/registry.go
@@ -6,6 +6,8 @@ import (
 	"sort"
 	"strings"
 	"time"
+	"regexp"
+	"reflect"
 
 	"github.com/docker/distribution/reference"
 	"github.com/docker/docker/api/types"
@@ -132,6 +134,11 @@ func (c *Controller) List(ctx context.Context, options ListOptions) (*api.Regist
 		name := strings.TrimPrefix(container.Names[0], "/")
 		created := time.Unix(container.Created, 0)
 
+		inspect, err := c.dockerClient.ContainerInspect(ctx, container.ID)
+		if err != nil {
+			return nil, err
+		}
+		env := inspect.Config.Env
 		netSummary := container.NetworkSettings
 		ipAddress := ""
 		networks := []string{}
@@ -163,6 +170,7 @@ func (c *Controller) List(ctx context.Context, options ListOptions) (*api.Regist
 				State:             container.State,
 				Labels:            container.Labels,
 				Image:             container.Image,
+				Env:               env,
 			},
 		}
 
@@ -218,6 +226,38 @@ func (c *Controller) Apply(ctx context.Context, desired *api.Registry) (*api.Reg
 			needsDelete = true
 		}
 	}
+
+	r := regexp.MustCompile("^(?P<key>[^=]+)=(?P<value>.*)")
+	desiredEnvs := make(map[string]string)
+	for _, value := range desired.Env {
+		m := r.FindStringSubmatch(value)
+		if m != nil {
+			k := m[r.SubexpIndex("key")]
+			v := m[r.SubexpIndex("value")]
+			if k != "PATH" {
+				desiredEnvs[k] = v
+			}
+		}
+	}
+	existingEnvs := make(map[string]string)
+	for _, value := range existing.Status.Env {
+		m := r.FindStringSubmatch(value)
+		if m != nil {
+			k := m[r.SubexpIndex("key")]
+			v := m[r.SubexpIndex("value")]
+			if k != "PATH" {
+				existingEnvs[k] = v
+			}
+		}
+	}
+	if _, ok := desiredEnvs["REGISTRY_STORAGE_DELETE_ENABLED"]; ! ok {
+		desiredEnvs["REGISTRY_STORAGE_DELETE_ENABLED"] = "true"
+		desired.Env = append(desired.Env, "REGISTRY_STORAGE_DELETE_ENABLED=true")
+	}
+	if eq := reflect.DeepEqual(desiredEnvs, existingEnvs); ! eq {
+		needsDelete = true
+	}
+
 	if needsDelete && existing.Name != "" {
 		err = c.Delete(ctx, existing.Name)
 		if err != nil {
@@ -253,7 +293,7 @@ func (c *Controller) Apply(ctx context.Context, desired *api.Registry) (*api.Reg
 			Image:        desired.Image,
 			ExposedPorts: exposedPorts,
 			Labels:       c.labelConfigs(existing, desired),
-			Env:          []string{"REGISTRY_STORAGE_DELETE_ENABLED=true"},
+			Env:          desired.Env,
 		},
 		&container.HostConfig{
 			RestartPolicy: container.RestartPolicy{Name: "always"},
diff --git a/pkg/registry/registry_test.go b/pkg/registry/registry_test.go
index b5dbc80..5c24ecb 100644
--- a/pkg/registry/registry_test.go
+++ b/pkg/registry/registry_test.go
@@ -138,6 +138,7 @@ func TestListRegistries(t *testing.T) {
 			State:             "running",
 			Labels:            map[string]string{"dev.tilt.ctlptl.role": "registry"},
 			Image:             "registry:2",
+			Env:							 []string{"REGISTRY_STORAGE_DELETE_ENABLED=true","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"},
 		},
 	}, list.Items[0])
 	assert.Equal(t, api.Registry{
@@ -155,6 +156,7 @@ func TestListRegistries(t *testing.T) {
 			State:             "running",
 			Labels:            map[string]string{"dev.tilt.ctlptl.role": "registry"},
 			Image:             "fake.tilt.dev/my-registry-image:latest",
+			Env:							 []string{"REGISTRY_STORAGE_DELETE_ENABLED=true","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"},
 		},
 	}, list.Items[1])
 	assert.Equal(t, api.Registry{
@@ -171,6 +173,7 @@ func TestListRegistries(t *testing.T) {
 			ContainerID:       "d62f2587ff7b03858f144d3cf83c789578a6d6403f8b82a459ab4e317917cd42",
 			State:             "running",
 			Image:             "registry:2",
+			Env:							 []string{"REGISTRY_STORAGE_DELETE_ENABLED=true","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"},
 		},
 	}, list.Items[2])
 }
@@ -198,6 +201,7 @@ func TestGetRegistry(t *testing.T) {
 			State:             "running",
 			Labels:            map[string]string{"dev.tilt.ctlptl.role": "registry"},
 			Image:             "registry:2",
+			Env:							 []string{"REGISTRY_STORAGE_DELETE_ENABLED=true","PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"},
 		},
 	}, registry)
 }
@@ -326,6 +330,47 @@ func TestCustomImage(t *testing.T) {
 	}
 }
 
+func TestCustomEnv(t *testing.T) {
+	f := newFixture(t)
+	defer f.TearDown()
+
+	// Make sure the previous registry is wiped out
+	// because it doesn't have the image we want.
+	f.docker.containers = []types.Container{kindRegistry()}
+
+	f.docker.onCreate = func() {
+		f.docker.containers = []types.Container{kindRegistry()}
+	}
+
+	// ensure stable w/o image change
+	_, err := f.c.Apply(context.Background(), &api.Registry{
+		TypeMeta: typeMeta,
+		Name:     "kind-registry",
+		Image:    "registry:2",
+	})
+	if assert.NoError(t, err) {
+		assert.Nil(t, f.docker.lastCreateConfig, "Registry should not have been re-created")
+	}
+
+	// change env, should be (re)created
+	registry, err := f.c.Apply(context.Background(), &api.Registry{
+		TypeMeta: typeMeta,
+		Name:     "kind-registry",
+		Image:    "registry:2",
+		Env:	    []string{"REGISTRY_STORAGE_DELETE_ENABLED=false"},
+	})
+	if assert.NoError(t, err) {
+		assert.Equal(t, "running", registry.Status.State)
+	}
+	config := f.docker.lastCreateConfig
+	if assert.NotNil(t, config) {
+		assert.Equal(t, map[string]string{"dev.tilt.ctlptl.role": "registry"}, config.Labels)
+		assert.Equal(t, "kind-registry", config.Hostname)
+		assert.Equal(t, "registry:2", config.Image)
+		assert.Equal(t, []string{"REGISTRY_STORAGE_DELETE_ENABLED=false"}, config.Env)
+	}
+}
+
 type fakeDocker struct {
 	containers           []types.Container
 	lastRemovedContainer string
@@ -358,6 +403,33 @@ func (d *fakeDocker) ContainerInspect(ctx context.Context, containerID string) (
 						Running: c.State == "running",
 					},
 				},
+				Config: &container.Config{
+					Hostname:"test", 
+					Domainname:"", 
+					User:"", 
+					AttachStdin:false, 
+					AttachStdout:false, 
+					AttachStderr:false, 
+					// ExposedPorts:nat.PortSet{"5000/tcp":struct {}{}}, 
+					Tty:false, 
+					OpenStdin:false, 
+					StdinOnce:false, 
+					Env:[]string{"REGISTRY_STORAGE_DELETE_ENABLED=true", "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"}, 
+					Cmd:[]string{"/etc/docker/registry/config.yml"}, 
+					Healthcheck:(*container.HealthConfig)(nil), 
+					ArgsEscaped:false, 
+					Image:"docker.io/library/registry:2", 
+					Volumes:map[string]struct {}{"/var/lib/registry":struct {}{}}, 
+					WorkingDir:"", 
+					Entrypoint:[]string{"/entrypoint.sh"}, 
+					NetworkDisabled:false, 
+					MacAddress:"", 
+					OnBuild:[]string(nil), 
+					Labels:map[string]string{"dev.tilt.ctlptl.role":"registry"}, 
+					StopSignal:"", 
+					StopTimeout:(*int)(nil), 
+					Shell:[]string(nil),
+				},
 			}, nil
 		}
 	}