Question 1 Completion

.dockerignore

@@ -0,0 +1,30 @@
+*.pyc
+__pycache__
+*.pyo
+*.pyd
+.Python
+env/
+venv/
+.env
+.venv
+pip-log.txt
+pip-delete-this-directory.txt
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.log
+.pytest_cache/
+.git
+.gitignore
+.github
+README.md
+CHANGELOG.md
+CONTRIBUTING.md
+LICENSE.md
+tests/
+docs/
+*.md 

.vscode/launch.json

@@ -0,0 +1,24 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Python: Flask in Docker",
+            "type": "python",
+            "request": "attach",
+            "connect": {
+                "host": "localhost",
+                "port": 5678
+            },
+            "pathMappings": [
+                {
+                    "localRoot": "${workspaceFolder}",
+                    "remoteRoot": "/app"
+                }
+            ],
+            "python": {
+                "pythonPath": "python",
+                "envFile": "${workspaceFolder}/.env"
+            }
+        }
+    ]
+} 

Dockerfile

@@ -0,0 +1,35 @@
+# Use official Python runtime as a parent image
+FROM python:3.11-slim
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PORT=8000
+
+# Set work directory
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends gcc \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first to leverage Docker cache
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy the rest of the application
+COPY . .
+
+# Create a non-root user and switch to it
+RUN adduser --disabled-password --gecos '' appuser \
+    && chown -R appuser:appuser /app
+USER appuser
+
+# Expose the port the app runs on
+EXPOSE 8000
+
+# Command to run the application
+CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:app"] 

docker-compose.yml

@@ -0,0 +1,14 @@
+version: '3.8'
+
+services:
+  web:
+    build: .
+    ports:
+      - "8000:8000"
+    volumes:
+      - .:/app
+    environment:
+      - FLASK_APP=app.py
+      - FLASK_ENV=development
+      - PYTHONUNBUFFERED=1
+    command: gunicorn --bind 0.0.0.0:8000 --reload app:app 

requirements.txt

@@ -1,2 +1,2 @@
-Flask==3.1.0
-gunicorn
+Flask==3.0.2
+gunicorn==21.2.0