adapted build.py to work with flutter projects

bin/build.py

@@ -35,6 +35,23 @@ def get_dockerfile_paths_and_names() -> Dict[str, str]:
     return command_args
 
 
+def is_flutter_project(path: str) -> bool:
+    test_file_path = f"{path}/pubspec.yaml"
+
+    return os.path.exists(test_file_path)
+
+class cd:
+    """Context manager for changing the current working directory"""
+    def __init__(self, newPath):
+        self.newPath = os.path.expanduser(newPath)
+
+    def __enter__(self):
+        self.savedPath = os.getcwd()
+        os.chdir(self.newPath)
+
+    def __exit__(self, etype, value, traceback):
+        os.chdir(self.savedPath)
+
 if __name__ == '__main__':
     p_image_name = None
 
@@ -60,26 +77,40 @@ if __name__ == '__main__':
         path = command_arg['path']
         image_name = f"{DOCKERHUB_REPO_OWNER}/{command_arg['name']}"
 
-        # copy Dockerfile into root dir to have access to modules folder
-        shutil.copy2(os.path.join(path, DOCKER_BUILD_NAME), ROOT)
+        if is_flutter_project(path):
+            with cd(path):
+                print(f"> flutter build web")
+                os.system(f"flutter build web")
 
-        # build then remove Dockerfile
-        exit_val = os.system(f"docker image build -t {image_name} {ROOT}")
-        os.remove(os.path.join(ROOT, DOCKER_BUILD_NAME))
+            print(f"> docker image build -t {image_name} {path}")
+            exit_val = os.system(f"docker image build -t {image_name} {path}")
 
-        res_str.append(f"{image_name} built with exit code {exit_val}")
+            if exit_val != 0:
+                error = exit_val
+            else:
+                print(f"> docker push {image_name}")
+                exit_val = os.system(f"docker push {image_name}")
+        else:
+            # copy Dockerfile into root dir to have access to modules folder
+            shutil.copy2(os.path.join(path, DOCKER_BUILD_NAME), ROOT)
 
-        if exit_val != 0:
-            error = exit_val
+            # build then remove Dockerfile
+            exit_val = os.system(f"docker image build -t {image_name} {ROOT}")
+            os.remove(os.path.join(ROOT, DOCKER_BUILD_NAME))
 
-        else:
-            # push created Docker image
-            exit_val = os.system(f"docker push {image_name}")
+            res_str.append(f"{image_name} built with exit code {exit_val}")
 
-            res_str.append(f"{image_name} pushed with exit code {exit_val}")
             if exit_val != 0:
                 error = exit_val
 
+            else:
+                # push created Docker image
+                exit_val = os.system(f"docker push {image_name}")
+
+                res_str.append(f"{image_name} pushed with exit code {exit_val}")
+                if exit_val != 0:
+                    error = exit_val
+
     print(f"Found {len(command_args)} images")
     for s in res_str:
         print(s)

src/dashboard/Dockerfile

 FROM nginx:latest
 EXPOSE 80
 
-COPY ./build/web/ /usr/share/nginx/html/
+COPY ./src/dashboard/build/web/ /usr/share/nginx/html/
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