Wizard: handle dos scripts in first boot

Scripts in which lines are terminated by CRLF break the first boot
service, so let's make sure the line termination is correct.

src/Components/CreateImageWizard/steps/FirstBoot/index.tsx

@@ -73,7 +73,10 @@ const FirstBootStep = () => {
           isCopyEnabled
           isLanguageLabelVisible
           language={language}
-          onCodeChange={(code) => dispatch(setFirstBootScript(code))}
+          onCodeChange={(code) => {
+            // In case the user is on windows
+            dispatch(setFirstBootScript(code.replace('\r\n', '\n')));
+          }}
           code={selectedScript}
           height="35vh"
           emptyStateButton={<span data-testid="firstboot_browse">Browse</span>}

src/test/Components/CreateImageWizard/steps/FirstBoot/Firstboot.test.tsx

@@ -9,6 +9,7 @@ import {
 import { mockBlueprintIds } from '../../../../fixtures/blueprints';
 import {
   SCRIPT,
+  SCRIPT_DOS,
   SCRIPT_WITHOUT_SHEBANG,
   firstBootCreateBlueprintRequest,
   firstBootData,
@@ -199,6 +200,37 @@ describe('First boot request generated correctly', () => {
       expect(receivedRequest).toEqual(expectedRequest);
     });
   });
+
+  test('dos2unix', async () => {
+    await renderCreateMode();
+    await selectGuestImageTarget();
+    await goToOscapStep();
+    await selectSimplifiedOscapProfile();
+    await goFromOscapToFirstBoot();
+    await openCodeEditor();
+    await uploadFile(SCRIPT_DOS);
+    await goToReviewStep();
+    const receivedRequest = await interceptBlueprintRequest(CREATE_BLUEPRINT);
+
+    // request created with both OpenSCAP and first boot customization
+    const expectedRequest = {
+      ...blueprintRequest,
+      customizations: {
+        filesystem: [{ min_size: 10737418240, mountpoint: '/' }],
+        openscap: {
+          profile_id: 'xccdf_org.ssgproject.content_profile_standard',
+        },
+        files: firstBootData,
+        // services need to contain both serviced included in the OpenSCAP profile
+        // and the first boot script
+        services: { enabled: ['crond', 'emacs-service', FIRST_BOOT_SERVICE] },
+      },
+    };
+
+    await waitFor(() => {
+      expect(receivedRequest).toEqual(expectedRequest);
+    });
+  });
 });
 
 describe('First Boot edit mode', () => {

src/test/fixtures/editMode.ts

@@ -114,7 +114,8 @@ export const expectedCustomRepositories: CustomRepository[] = [
 ];
 
 // First Boot
-export const SCRIPT = `#!/bin/bash 
+export const SCRIPT_DOS = `#!/bin/bash\r\nsystemctl enable cockpit.socket`;
+export const SCRIPT = `#!/bin/bash
 systemctl enable cockpit.socket`;
 export const BASE64_SCRIPT = btoa(SCRIPT);
 export const SCRIPT_WITHOUT_SHEBANG = `echo "Hello, world!"`;