Created Flask Example application for dokploy and added README.MD

Flask-Example/README.MD

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+# Flask Application Examples
+
+This repository contains a Flask application along with necessary setup instructions.
+
+## Installation
+
+Follow these steps to set up and install the Flask application:
+
+### Prerequisites
+
+- Python 3.x installed on your system. You can download Python from [python.org](https://www.python.org/).
+
+### Setup
+
+1. Make dir and go to directory:
+
+   ```bash
+   mkdir <directory>
+   cd <directory>
+   ```
+2. Create and activate a virtual environment:
+    ```bash
+   python3 -m venv venv
+   ```
+   Activate the virtual environment:
+    On windows:
+    ```bash
+   venv\Scripts\activate
+   ```
+      On macOS/Linux:
+    ```bash
+   source venv/bin/activate
+   ```
+3. Install dependencies:
+     ```bash 
+      pip install -r requirements.txt
+    ```
+   
+4. Running the Application:
+     ```bash 
+      python main.py
+    ```