Specific error message when user tries to remove one container from an ACI compose application, mentioning the name of the compose application and that user should use compose down

azure/backend.go

@@ -258,7 +258,11 @@ func (cs *aciContainerService) Logs(ctx context.Context, containerName string, r
 }
 
 func (cs *aciContainerService) Delete(ctx context.Context, containerID string, _ bool) error {
-	cg, err := deleteACIContainerGroup(ctx, cs.ctx, containerID)
+	groupName, containerName := getGroupAndContainerName(containerID)
+	if groupName != containerID {
+		return errors.New(fmt.Sprintf(`cannot delete service "%s" from compose app "%s", you must delete the entire compose app with docker compose down`, containerName, groupName))
+	}
+	cg, err := deleteACIContainerGroup(ctx, cs.ctx, groupName)
 	if err != nil {
 		return err
 	}

azure/backend_test.go

@@ -17,6 +17,7 @@
 package azure
 
 import (
+	"context"
 	"testing"
 
 	"github.com/stretchr/testify/suite"
@@ -42,6 +43,14 @@ func (suite *BackendSuiteTest) TestGetContainerName() {
 	Expect(container).To(Equal("service1"))
 }
 
+func (suite *BackendSuiteTest) TestErrorMessageDeletingContainerFromComposeApplication() {
+	service := aciContainerService{}
+	err := service.Delete(context.TODO(), "compose-app_service1", false)
+
+	Expect(err).NotTo(BeNil())
+	Expect(err.Error()).To(Equal("cannot delete service \"service1\" from compose app \"compose-app\", you must delete the entire compose app with docker compose down"))
+}
+
 func TestBackendSuite(t *testing.T) {
 	RegisterTestingT(t)
 	suite.Run(t, new(BackendSuiteTest))

example/backend.go

@@ -22,9 +22,10 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"github.com/compose-spec/compose-go/cli"
 	"io"
 
+	"github.com/compose-spec/compose-go/cli"
+
 	"github.com/docker/api/context/cloud"
 
 	"github.com/docker/api/backend"