Assignment => Bug fix on creation: If the CI/CD file was already in the...

Assignment => Bug fix on creation: If the CI/CD file was already in the template repo, the assignment creation failed

ExpressAPI/assets/OpenAPI/OpenAPI.yaml

 openapi: 3.1.0
 info:
     title: Dojo API
-    version: 3.2.0
+    version: 3.3.0
     description: |
         **Backend API of the Dojo project.**
         

ExpressAPI/src/managers/GitlabManager.ts

@@ -241,6 +241,18 @@ class GitlabManager {
     async updateFile(repoId: number, filePath: string, fileBase64: string, commitMessage: string, branch: string = 'main', authorName: string = 'Dojo', authorMail: string | undefined = undefined) {
         return this.createUpdateFile(false, repoId, filePath, fileBase64, commitMessage, branch, authorName, authorMail);
     }
+
+    async deleteFile(repoId: number, filePath: string, commitMessage: string, branch: string = 'main', authorName: string = 'Dojo', authorMail: string | undefined = undefined) {
+        await axios.delete(this.getApiUrl(GitlabRoute.REPOSITORY_FILE).replace('{{id}}', String(repoId)).replace('{{filePath}}', encodeURIComponent(filePath)), {
+            data: {
+                branch        : branch,
+                commit_message: commitMessage,
+                author_name   : authorName,
+                author_email  : authorMail
+            }
+        });
+
+    }
 }
 
 

ExpressAPI/src/routes/AssignmentRoutes.ts

@@ -120,6 +120,10 @@ class AssignmentRoutes implements RoutesManager {
             return GlobalHelper.repositoryCreationError('Repo params error', error, req, res, DojoStatusCode.ASSIGNMENT_CREATION_GITLAB_ERROR, DojoStatusCode.ASSIGNMENT_CREATION_INTERNAL_ERROR, repository);
         }
 
+        try {
+            await GitlabManager.deleteFile(repository.id, '.gitlab-ci.yml', 'Remove .gitlab-ci.yml');
+        } catch ( error ) { /* empty */ }
+
         try {
             await GitlabManager.createFile(repository.id, '.gitlab-ci.yml', fs.readFileSync(path.join(__dirname, '../../assets/assignment_gitlab_ci.yml'), 'base64'), 'Add .gitlab-ci.yml (DO NOT MODIFY THIS FILE)');
         } catch ( error ) {