Merge pull request DefangLabs#333 from defang-io:Chrisyhjiang-flask

Flask Example
Chrisyhjiang · May 3, 2024 · 283dffa · 283dffa
2 parents 90edeeb + c837659
commit 283dffa
Show file tree

Hide file tree

Showing 4 changed files with 96 additions and 0 deletions.
diff --git a/samples/python/flask/Dockerfile b/samples/python/flask/Dockerfile
@@ -0,0 +1,25 @@
+# Use an official Python runtime as a base image
+FROM python:3.9-slim
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Install required packages
+RUN apt-get update \
+      && apt-get install -y --no-install-recommends \
+            build-essential \
+            python3-dev \
+      && rm -rf /var/lib/apt/lists/*
+
+# Copy the current directory contents into the container at /app
+COPY . /app
+
+# Install any needed packages specified in requirements.txt
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Make port 5000 available to the world outside this container
+EXPOSE 5000
+
+# Run app.py when the container launches
+CMD ["python", "app.py"]
diff --git a/samples/python/flask/app.py b/samples/python/flask/app.py
@@ -0,0 +1,49 @@
+from flask import Flask, jsonify, request, render_template_string
+
+app = Flask(__name__)
+
+# A simple in-memory structure to store tasks
+tasks = []
+
+@app.route('/', methods=['GET'])
+def home():
+    # Display existing tasks and a form to add a new task
+    html = '''
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Todo List</title>
+</head>
+<body>
+    <h1>Todo List</h1>
+    <form action="/add" method="POST">
+        <input type="text" name="task" placeholder="Enter a new task">
+        <input type="submit" value="Add Task">
+    </form>
+    <ul>
+        {% for task in tasks %}
+        <li>{{ task }} <a href="/delete/{{ loop.index0 }}">x</a></li>
+        {% endfor %}
+    </ul>
+</body>
+</html>
+'''
+    return render_template_string(html, tasks=tasks)
+
+@app.route('/add', methods=['POST'])
+def add_task():
+    # Add a new task from the form data
+    task = request.form.get('task')
+    if task:
+        tasks.append(task)
+    return home()
+
+@app.route('/delete/<int:index>', methods=['GET'])
+def delete_task(index):
+    # Delete a task based on its index
+    if index < len(tasks):
+        tasks.pop(index)
+    return home()
+
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0')
diff --git a/samples/python/flask/compose.yaml b/samples/python/flask/compose.yaml
@@ -0,0 +1,18 @@
+version: '3.9'
+services:
+  service1:
+    restart: unless-stopped
+    build:
+      context: .
+      dockerfile: Dockerfile
+    deploy:
+      resources:
+        reservations:
+          cpus: '1.0'
+          memory: 512M
+    ports:
+      - mode: ingress
+        target: 5000
+        published: 5000
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:5000/"]
diff --git a/samples/python/flask/requirements.txt b/samples/python/flask/requirements.txt
@@ -0,0 +1,4 @@
+Flask==1.1.4
+Werkzeug==0.16.1
+MarkupSafe==1.1.1
+