Add simple flask app

Dockerfile

@@ -1,5 +1,8 @@
 FROM python:3.12-slim
 
+ENV FLASK_RUN_HOST=0.0.0.0
+ENV FLASK_RUN_PORT=8000
+
 # Set the working directory in the container
 WORKDIR /usr/src/app
 
@@ -9,14 +12,20 @@ RUN adduser --disabled-password --gecos '' containeruser
 # Change ownership of the working directory to the non-root user
 RUN chown -R containeruser:containeruser /usr/src/app
 
+# Copy the dependencies file to the working directory
+COPY requirements.in ./
+
 # Install any needed dependencies
 RUN pip install --no-cache-dir -r requirements.in
 
+# Copy the project code into the working directory
+COPY . .
+
 # Switch to the non-root user
 USER containeruser
 
 # Expose the Flask port
 EXPOSE 8000
 
 # Run the Flask application for development
-CMD ["flask", "run", "--cert=adhoc"]
+CMD ["flask", "run"]

app.py

@@ -0,0 +1,8 @@
+from flask import Flask
+
+app = Flask(__name__)
+
+
+@app.route("/")
+def hello_world():
+    return "<p>Hello, World!</p>"