Merge pull request #262 from DefangLabs/linda-curl-consistency

Make curl use eval consistently

Author: lionello

.github/workflows/deploy.yaml

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+name: Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    environment: playground
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+    - name: Checkout Repo
+      uses: actions/checkout@v4
+
+    - name: Deploy
+      uses: DefangLabs/[email protected]

README.md

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+# Flask
+
+[![1-click-deploy](https://defang.io/deploy-with-defang.png)](https://portal.defang.dev/redirect?url=https%3A%2F%2Fgithub.com%2Fnew%3Ftemplate_name%3Dsample-flask-template%26template_owner%3DDefangSamples)
+
+This is a sample of a basic Flask TODO app. The items are stored in memory and are lost when the server is restarted, but it should give you a basic idea of how to get started with Flask on Defang. Note that alognside your .py file, include a requirements.txt so that the Dockerfile can install the necessary packages with pip.
+
+### NOTE:
+
+This sample is a simple Flask app that demonstrates how to create a TODO app using Flask. The items are stored in memory and are lost when the server is restarted. This sample is intended to provide a basic understanding of how to get started with Flask on Defang. **it is not intended for production use**. If you need something production ready, you should use a managed database like Postgres or MySQL.
+
+## Essential Setup Files
+
+1. A [Dockerfile](https://docs.docker.com/develop/develop-images/dockerfile_best-practices/).
+2. A [compose file](https://docs.defang.io/docs/concepts/compose) to define and run multi-container Docker applications (this is how Defang identifies services to be deployed).
+3. A [.dockerignore](https://docs.docker.com/build/building/context/#dockerignore-files) to ignore files that are not needed in the Docker image or will be generated during the build process.
+
+## Prerequisite
+
+1. Download [Defang CLI](https://github.com/DefangLabs/defang)
+2. If you are using [Defang BYOC](https://docs.defang.io/docs/concepts/defang-byoc), make sure you have properly [authenticated your AWS account (optional)](https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html)
+
+## A Step-by-Step Guide
+
+1. Open the terminal and type `defang login`
+2. Type `defang compose up` in the CLI
+3. Your app should be up and running with Defang in minutes!
+
+## One click deployment
+
+---
+
+Title: Flask
+
+Short Description: A basic Flask to do app.
+
+Tags: Flask, Python
+
+Languages: python

compose.yaml

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+services:
+  flask:
+    restart: unless-stopped
+    build:
+      context: ./flask
+      dockerfile: Dockerfile
+    deploy:
+      resources:
+        reservations:
+          cpus: "1.0"
+          memory: 512M
+    ports:
+      - mode: ingress
+        target: 5000
+        published: 5000
+    healthcheck:
+      test: ["CMD", "python3", "-c", "import sys, urllib.request; urllib.request.urlopen(sys.argv[1]).read()", "http://localhost:5000/"]

flask/Dockerfile

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+# Use an official Python runtime as a base image
+FROM python:3.11-slim
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Install required packages
+RUN apt-get update -qq \
+      && apt-get install -y --no-install-recommends \
+      build-essential \
+      python3-dev \
+      && apt-get clean \
+      && 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"]

flask/app.py

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+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')

flask/requirements.txt

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+Flask==2.2.5
+Werkzeug==2.2.2
+MarkupSafe==2.1.1