chore(pipeline): change error message to use var (#2627)

Just a tiny change to use the var introduced in #2523.

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Author: huanjani

internal/pkg/cli/pipeline_init.go

@@ -218,7 +218,7 @@ func (o *initPipelineOpts) validateURL(url string) error {
 	// Note: no longer calling `validateDomainName` because if users use git-remote-codecommit
 	// (the HTTPS (GRC) protocol) to connect to CodeCommit, the url does not have any periods.
 	if !strings.Contains(url, githubURL) && !strings.Contains(url, ccIdentifier) && !strings.Contains(url, bbURL) {
-		return errors.New("Copilot currently accepts URLs to only GitHub, CodeCommit, and Bitbucket repository sources")
+		return fmt.Errorf("must be a URL to a supported provider (%s)", strings.Join(manifest.PipelineProviders, ", "))
 	}
 	return nil
 }

internal/pkg/cli/pipeline_init_test.go

@@ -53,7 +53,7 @@ func TestInitPipelineOpts_Validate(t *testing.T) {
 				m.EXPECT().GetApplication("my-app").Return(&config.Application{Name: "my-app"}, nil)
 			},
 
-			expectedError: errors.New("Copilot currently accepts URLs to only GitHub, CodeCommit, and Bitbucket repository sources"),
+			expectedError: errors.New("must be a URL to a supported provider (GitHub, CodeCommit, Bitbucket)"),
 		},
 		"invalid environments": {
 			inAppName: "my-app",
@@ -323,7 +323,7 @@ func TestInitPipelineOpts_Ask(t *testing.T) {
 			},
 			mockSessProvider: func(m *mocks.MocksessionProvider) {},
 
-			expectedError: fmt.Errorf("Copilot currently accepts URLs to only GitHub, CodeCommit, and Bitbucket repository sources"),
+			expectedError: fmt.Errorf("must be a URL to a supported provider (GitHub, CodeCommit, Bitbucket)"),
 		},
 		"returns error if fail to parse GitHub URL": {
 			inEnvironments:      []string{},