add Dockerfile + App

Dockerfile

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+FROM ubuntu:focal
+
+# deaktiviert Nachfragen beim installieren von Paketen
+ENV DEBIAN_FRONTEND=noninteractive
+
+# hadolint ignore=DL3008,DL3028,DL4006
+RUN apt-get update && \
+   	apt-get -y --no-install-recommends install \
+		python3-pip && \
+		apt-get clean && \
+	  rm -rf /var/lib/apt/lists/* /var/tmp/* /tmp/*
+
+WORKDIR /app
+
+COPY requirements.txt .
+COPY app.py .
+
+RUN pip install --no-cache-dir -r requirements.txt
+
+EXPOSE 5000
+
+CMD [ "python3", "-m" , "flask", "run"]

app.py

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+from flask import Flask, request, jsonify
+import os
+
+app = Flask(__name__)
+app.config['UPLOAD_FOLDER'] = 'uploads/'
+app.config['MAX_CONTENT_LENGTH'] = 5 * 1024 * 1024  # 5MB limit
+
+@app.route('/upload', methods=['POST'])
+def upload_file():
+    file = request.files['file']
+    if file:
+        filename = file.filename
+        if not os.path.exists(app.config['UPLOAD_FOLDER']):
+            os.makedirs(app.config['UPLOAD_FOLDER'])
+        file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
+        return 'File uploaded successfully'
+    else:
+        return 'No file specified', 400
+
+@app.route('/files', methods=['GET'])
+def list_files():
+    files = []
+    for filename in os.listdir(app.config['UPLOAD_FOLDER']):
+        path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
+        if os.path.isfile(path):
+            files.append(filename)
+    return jsonify(files)
+
+if __name__ == '__main__':
+    app.run()
+
+# curl -X POST -F 'file=@/path/to/file' http://localhost:5000/upload
+# curl http://localhost:5000/files

requirements.txt

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+Flask==2.0.1
+Flask-Cors==3.0.10