use '-' as separator by default for image name

Signed-off-by: Guillaume Lours <guillaume.lours@docker.com>

cmd/compose/compose.go

@@ -159,15 +159,15 @@ func (o *projectOptions) toProject(services []string, po ...cli.ProjectOptionsFn
 		return nil, compose.WrapComposeError(err)
 	}
 
+	if o.Compatibility || utils.StringToBool(options.Environment["COMPOSE_COMPATIBILITY"]) {
+		api.Separator = "_"
+	}
+
 	project, err := cli.ProjectFromOptions(options)
 	if err != nil {
 		return nil, compose.WrapComposeError(err)
 	}
 
-	if o.Compatibility || utils.StringToBool(project.Environment["COMPOSE_COMPATIBILITY"]) {
-		compose.Separator = "_"
-	}
-
 	ef := o.EnvFile
 	if ef != "" && !filepath.IsAbs(ef) {
 		ef, err = filepath.Abs(ef)

pkg/api/api.go

@@ -446,11 +446,14 @@ const (
 	UserCancel
 )
 
+// Separator is used for naming components
+var Separator = "-"
+
 // GetImageNameOrDefault computes the default image name for a service, used to tag built images
 func GetImageNameOrDefault(service types.ServiceConfig, projectName string) string {
 	imageName := service.Image
 	if imageName == "" {
-		imageName = projectName + "_" + service.Name
+		imageName = projectName + Separator + service.Name
 	}
 	return imageName
 }

pkg/compose/compose.go

@@ -36,9 +36,6 @@ import (
 	"github.com/sanathkr/go-yaml"
 )
 
-// Separator is used for naming components
-var Separator = "-"
-
 // NewComposeService create a local implementation of the compose.Service API
 func NewComposeService(dockerCli command.Cli) api.Service {
 	return &composeService{

pkg/compose/convergence.go

@@ -261,7 +261,7 @@ func mustRecreate(expected types.ServiceConfig, actual moby.Container, policy st
 }
 
 func getContainerName(projectName string, service types.ServiceConfig, number int) string {
-	name := strings.Join([]string{projectName, service.Name, strconv.Itoa(number)}, Separator)
+	name := strings.Join([]string{projectName, service.Name, strconv.Itoa(number)}, api.Separator)
 	if service.ContainerName != "" {
 		name = service.ContainerName
 	}
@@ -553,8 +553,8 @@ func (s composeService) getLinks(ctx context.Context, projectName string, servic
 			containerName := getCanonicalContainerName(c)
 			links = append(links,
 				format(containerName, linkName),
-				format(containerName, linkServiceName+Separator+strconv.Itoa(number)),
-				format(containerName, strings.Join([]string{projectName, linkServiceName, strconv.Itoa(number)}, Separator)),
+				format(containerName, linkServiceName+api.Separator+strconv.Itoa(number)),
+				format(containerName, strings.Join([]string{projectName, linkServiceName, strconv.Itoa(number)}, api.Separator)),
 			)
 		}
 	}
@@ -568,7 +568,7 @@ func (s composeService) getLinks(ctx context.Context, projectName string, servic
 			containerName := getCanonicalContainerName(c)
 			links = append(links,
 				format(containerName, service.Name),
-				format(containerName, strings.TrimPrefix(containerName, projectName+Separator)),
+				format(containerName, strings.TrimPrefix(containerName, projectName+api.Separator)),
 				format(containerName, containerName),
 			)
 		}

pkg/compose/create_test.go

@@ -80,7 +80,7 @@ func TestBuildVolumeMount(t *testing.T) {
 
 func TestServiceImageName(t *testing.T) {
 	assert.Equal(t, api.GetImageNameOrDefault(composetypes.ServiceConfig{Image: "myImage"}, "myProject"), "myImage")
-	assert.Equal(t, api.GetImageNameOrDefault(composetypes.ServiceConfig{Name: "aService"}, "myProject"), "myProject_aService")
+	assert.Equal(t, api.GetImageNameOrDefault(composetypes.ServiceConfig{Name: "aService"}, "myProject"), "myProject-aService")
 }
 
 func TestPrepareNetworkLabels(t *testing.T) {

pkg/e2e/build_test.go

@@ -31,30 +31,30 @@ func TestLocalComposeBuild(t *testing.T) {
 
 	t.Run("build named and unnamed images", func(t *testing.T) {
 		// ensure local test run does not reuse previously build image
-		c.RunDockerOrExitError(t, "rmi", "build-test_nginx")
+		c.RunDockerOrExitError(t, "rmi", "build-test-nginx")
 		c.RunDockerOrExitError(t, "rmi", "custom-nginx")
 
 		res := c.RunDockerComposeCmd(t, "--project-directory", "fixtures/build-test", "build")
 
 		res.Assert(t, icmd.Expected{Out: "COPY static /usr/share/nginx/html"})
-		c.RunDockerCmd(t, "image", "inspect", "build-test_nginx")
+		c.RunDockerCmd(t, "image", "inspect", "build-test-nginx")
 		c.RunDockerCmd(t, "image", "inspect", "custom-nginx")
 	})
 
 	t.Run("build with build-arg", func(t *testing.T) {
 		// ensure local test run does not reuse previously build image
-		c.RunDockerOrExitError(t, "rmi", "build-test_nginx")
+		c.RunDockerOrExitError(t, "rmi", "build-test-nginx")
 		c.RunDockerOrExitError(t, "rmi", "custom-nginx")
 
 		c.RunDockerComposeCmd(t, "--project-directory", "fixtures/build-test", "build", "--build-arg", "FOO=BAR")
 
-		res := c.RunDockerCmd(t, "image", "inspect", "build-test_nginx")
+		res := c.RunDockerCmd(t, "image", "inspect", "build-test-nginx")
 		res.Assert(t, icmd.Expected{Out: `"FOO": "BAR"`})
 	})
 
 	t.Run("build with build-arg set by env", func(t *testing.T) {
 		// ensure local test run does not reuse previously build image
-		c.RunDockerOrExitError(t, "rmi", "build-test_nginx")
+		c.RunDockerOrExitError(t, "rmi", "build-test-nginx")
 		c.RunDockerOrExitError(t, "rmi", "custom-nginx")
 
 		icmd.RunCmd(c.NewDockerComposeCmd(t,
@@ -67,20 +67,20 @@ func TestLocalComposeBuild(t *testing.T) {
 				cmd.Env = append(cmd.Env, "FOO=BAR")
 			})
 
-		res := c.RunDockerCmd(t, "image", "inspect", "build-test_nginx")
+		res := c.RunDockerCmd(t, "image", "inspect", "build-test-nginx")
 		res.Assert(t, icmd.Expected{Out: `"FOO": "BAR"`})
 	})
 
 	t.Run("build with multiple build-args ", func(t *testing.T) {
 		// ensure local test run does not reuse previously build image
-		c.RunDockerOrExitError(t, "rmi", "-f", "multi-args_multiargs")
+		c.RunDockerOrExitError(t, "rmi", "-f", "multi-args-multiargs")
 		cmd := c.NewDockerComposeCmd(t, "--project-directory", "fixtures/build-test/multi-args", "build")
 
 		icmd.RunCmd(cmd, func(cmd *icmd.Cmd) {
 			cmd.Env = append(cmd.Env, "DOCKER_BUILDKIT=0")
 		})
 
-		res := c.RunDockerCmd(t, "image", "inspect", "multi-args_multiargs")
+		res := c.RunDockerCmd(t, "image", "inspect", "multi-args-multiargs")
 		res.Assert(t, icmd.Expected{Out: `"RESULT": "SUCCESS"`})
 	})
 
@@ -131,7 +131,7 @@ func TestLocalComposeBuild(t *testing.T) {
 	})
 
 	t.Run("build as part of up", func(t *testing.T) {
-		c.RunDockerOrExitError(t, "rmi", "build-test_nginx")
+		c.RunDockerOrExitError(t, "rmi", "build-test-nginx")
 		c.RunDockerOrExitError(t, "rmi", "custom-nginx")
 
 		res := c.RunDockerComposeCmd(t, "--project-directory", "fixtures/build-test", "up", "-d")
@@ -145,7 +145,7 @@ func TestLocalComposeBuild(t *testing.T) {
 		output := HTTPGetWithRetry(t, "http://localhost:8070", http.StatusOK, 2*time.Second, 20*time.Second)
 		assert.Assert(t, strings.Contains(output, "Hello from Nginx container"))
 
-		c.RunDockerCmd(t, "image", "inspect", "build-test_nginx")
+		c.RunDockerCmd(t, "image", "inspect", "build-test-nginx")
 		c.RunDockerCmd(t, "image", "inspect", "custom-nginx")
 	})
 
@@ -164,7 +164,7 @@ func TestLocalComposeBuild(t *testing.T) {
 
 	t.Run("cleanup build project", func(t *testing.T) {
 		c.RunDockerComposeCmd(t, "--project-directory", "fixtures/build-test", "down")
-		c.RunDockerCmd(t, "rmi", "build-test_nginx")
+		c.RunDockerCmd(t, "rmi", "build-test-nginx")
 		c.RunDockerCmd(t, "rmi", "custom-nginx")
 	})
 }
@@ -216,19 +216,19 @@ func TestBuildImageDependencies(t *testing.T) {
 		t.Cleanup(resetState)
 
 		// the image should NOT exist now
-		res := cli.RunDockerOrExitError(t, "image", "inspect", "build-dependencies_service")
+		res := cli.RunDockerOrExitError(t, "image", "inspect", "build-dependencies-service")
 		res.Assert(t, icmd.Expected{
 			ExitCode: 1,
-			Err:      "Error: No such image: build-dependencies_service",
+			Err:      "Error: No such image: build-dependencies-service",
 		})
 
 		res = cli.RunDockerComposeCmd(t, "build")
 		t.Log(res.Combined())
 
 		res = cli.RunDockerCmd(t,
 			"image", "inspect", "--format={{ index .RepoTags 0 }}",
-			"build-dependencies_service")
-		res.Assert(t, icmd.Expected{Out: "build-dependencies_service:latest"})
+			"build-dependencies-service")
+		res.Assert(t, icmd.Expected{Out: "build-dependencies-service:latest"})
 	}
 
 	t.Run("ClassicBuilder", func(t *testing.T) {

pkg/e2e/fixtures/project-volume-bind-test/docker-compose.yml

@@ -3,10 +3,10 @@ services:
     image: nginx
     container_name: frontend
     volumes:
-      - project_data:/data
+      - project-data:/data
 
 volumes:
-  project_data:
+  project-data:
     driver: local
     driver_opts:
       type: none

pkg/e2e/networks_test.go

@@ -30,10 +30,10 @@ func TestNetworks(t *testing.T) {
 	// fixture is shared with TestNetworkModes and is not safe to run concurrently
 	c := NewCLI(t)
 
-	const projectName = "network_e2e"
+	const projectName = "network-e2e"
 
 	t.Run("ensure we do not reuse previous networks", func(t *testing.T) {
-		c.RunDockerOrExitError(t, "network", "rm", projectName+"_dbnet")
+		c.RunDockerOrExitError(t, "network", "rm", projectName+"-dbnet")
 		c.RunDockerOrExitError(t, "network", "rm", "microservices")
 	})
 
@@ -125,7 +125,7 @@ func TestIPAMConfig(t *testing.T) {
 	const projectName = "ipam_e2e"
 
 	t.Run("ensure we do not reuse previous networks", func(t *testing.T) {
-		c.RunDockerOrExitError(t, "network", "rm", projectName+"_default")
+		c.RunDockerOrExitError(t, "network", "rm", projectName+"-default")
 	})
 
 	t.Run("up", func(t *testing.T) {

pkg/e2e/scan_message_test.go

@@ -37,24 +37,24 @@ func TestDisplayScanMessageAfterBuild(t *testing.T) {
 	t.Run("display on compose build", func(t *testing.T) {
 		res := c.RunDockerComposeCmd(t, "-f", "fixtures/simple-build-test/compose.yaml", "-p",
 			"scan-msg-test-compose-build", "build")
-		defer c.RunDockerOrExitError(t, "rmi", "-f", "scan-msg-test-compose-build_nginx")
+		defer c.RunDockerOrExitError(t, "rmi", "-f", "scan-msg-test-compose-build-nginx")
 		res.Assert(t, icmd.Expected{Err: utils.ScanSuggestMsg})
 	})
 
 	t.Run("do not display on compose build with quiet flag", func(t *testing.T) {
 		res := c.RunDockerComposeCmd(t, "-f", "fixtures/simple-build-test/compose.yaml", "-p", "scan-msg-test-quiet",
 			"build", "--quiet")
 		assert.Assert(t, !strings.Contains(res.Combined(), "docker scan"), res.Combined())
-		res = c.RunDockerCmd(t, "rmi", "-f", "scan-msg-test-quiet_nginx")
+		res = c.RunDockerCmd(t, "rmi", "-f", "scan-msg-test-quiet-nginx")
 		assert.Assert(t, !strings.Contains(res.Combined(), "No such image"))
 
 		res = c.RunDockerComposeCmd(t, "-f", "fixtures/simple-build-test/compose.yaml", "-p", "scan-msg-test-q",
 			"build", "-q")
-		defer c.RunDockerOrExitError(t, "rmi", "-f", "scan-msg-test-q_nginx")
+		defer c.RunDockerOrExitError(t, "rmi", "-f", "scan-msg-test-q-nginx")
 		assert.Assert(t, !strings.Contains(res.Combined(), "docker scan"), res.Combined())
 	})
 
-	_ = c.RunDockerOrExitError(t, "rmi", "scan-msg-test_nginx")
+	_ = c.RunDockerOrExitError(t, "rmi", "scan-msg-test-nginx")
 
 	t.Run("display on compose up if image is built", func(t *testing.T) {
 		res := c.RunDockerComposeCmd(t, "-f", "fixtures/simple-build-test/compose.yaml", "-p", "scan-msg-test", "up",

pkg/e2e/volumes_test.go

@@ -35,8 +35,8 @@ func TestLocalComposeVolume(t *testing.T) {
 
 	t.Run("up with build and no image name, volume", func(t *testing.T) {
 		// ensure local test run does not reuse previously build image
-		c.RunDockerOrExitError(t, "rmi", "compose-e2e-volume_nginx")
-		c.RunDockerOrExitError(t, "volume", "rm", projectName+"_staticVol")
+		c.RunDockerOrExitError(t, "rmi", "compose-e2e-volume-nginx")
+		c.RunDockerOrExitError(t, "volume", "rm", projectName+"-staticVol")
 		c.RunDockerOrExitError(t, "volume", "rm", "myvolume")
 		c.RunDockerComposeCmd(t, "--project-directory", "fixtures/volume-test", "--project-name", projectName, "up",
 			"-d")
@@ -88,7 +88,7 @@ func TestLocalComposeVolume(t *testing.T) {
 	t.Run("cleanup volume project", func(t *testing.T) {
 		c.RunDockerComposeCmd(t, "--project-name", projectName, "down", "--volumes")
 		ls := c.RunDockerCmd(t, "volume", "ls").Stdout()
-		assert.Assert(t, !strings.Contains(ls, projectName+"_staticVol"))
+		assert.Assert(t, !strings.Contains(ls, projectName+"-staticVol"))
 		assert.Assert(t, !strings.Contains(ls, "myvolume"))
 	})
 }
@@ -107,7 +107,7 @@ func TestProjectVolumeBind(t *testing.T) {
 
 		c.RunDockerComposeCmd(t, "--project-name", projectName, "down")
 
-		c.RunDockerOrExitError(t, "volume", "rm", "-f", projectName+"_project_data").Assert(t, icmd.Success)
+		c.RunDockerOrExitError(t, "volume", "rm", "-f", projectName+"-project-data").Assert(t, icmd.Success)
 		cmd := c.NewCmdWithEnv([]string{"TEST_DIR=" + tmpDir},
 			"docker", "compose", "--project-directory", "fixtures/project-volume-bind-test", "--project-name", projectName, "up", "-d")
 		icmd.RunCmd(cmd).Assert(t, icmd.Success)