FIX: remove shebang in the main workflow -> example in "isugifNF/blast"

src/workflow.py

@@ -696,15 +696,18 @@ George Marchment, Bryan Brancotte, Marie Schmit, Frédéric Lemoine, Sarah Cohen
             tag = str(time.time())
             
             code = self.nextflow_file.get_code()
-            start_code = "#!/usr/bin/env nextflow"
+            start_code = r"#!/usr/bin/env nextflow"
+            start_code_pattern = r"\#\!\s*\/usr\/bin\/env\s+nextflow"
             end_code = "workflow.onComplete"
             
             pos_start, pos_end= 0, len(code)
             if(code.find(end_code)!=-1):
                 pos_end = code.find(end_code)
             code_to_replace = code[pos_start:pos_end]
-            if(code.find(start_code)!=-1):
-                pos_start = code.find(start_code)+len(start_code)
+            for match in re.finditer(start_code_pattern, start_code):
+                pos_start = match.span(0)[1]+1
+            #if(code.find(start_code)!=-1):
+            #    pos_start = code.find(start_code)+len(start_code)
             body = code[pos_start:pos_end]#.replace('\n', '\n\t')
 
             include_section = f"//INCLUDE_SECTION_{tag}"