Add gunicorn production server

Dockerfile

@@ -22,5 +22,5 @@ COPY . .
 RUN pip install -r requirements.txt
 WORKDIR /app
 EXPOSE 5000
-ENTRYPOINT [ "python" ]
-CMD [ "portable.py" ] 
+ENTRYPOINT [ "gunicorn" ]
+CMD [  "portable:app" ]

README.md

@@ -15,6 +15,7 @@ It pretends to be GoogleBot (Google's web crawler) and gets the same content tha
 ### Using Docker
 
 Requirements:
+
 - docker
 - Docker Compose (available as `docker compose`)
 
@@ -44,7 +45,7 @@ If that doesn't work retry but replace `python` with `py`, then try `python3`, t
 Then run `portable.py`, click [this link](https://realpython.com/run-python-scripts/) for a tutorial on how to run python scripts.
 
 ```sh
-python portable.py
+python -m gunicorn 'portable:app'
 ```
 
 Then open the link shown in the terminal in the browser and you'll be able to use this
@@ -58,26 +59,29 @@ python -m pip install -r requirements.txt
 FLASK_APP=app/portable.py flask run --host=127.0.0.1 --port=9982
 ```
 
-
 ## Using as a Bookmarklet in Chrome:
 
 You can create a bookmarklet that performs the URL transformation by writing a small JavaScript snippet. Below is the JavaScript code for your bookmarklet:
+
 ```javascript
-javascript:(function(){window.location.href='https://13ft.wasimaster.me/'+encodeURIComponent(window.location.href);})();
+javascript: (function () {
+  window.location.href =
+    "https://13ft.wasimaster.me/" + encodeURIComponent(window.location.href);
+})();
 ```
+
 You can replace https://13ft.wasimaster.me with your own 13ft instance if desired.
 
 Steps:
+
 1. Open Bookmarks Manager:
 
 2. Click on the three dots (menu) in the top-right corner of Chrome.
-Go to Bookmarks > Bookmark manager, or simply press Ctrl+Shift+O on Windows/Linux or Cmd+Option+B on Mac.
-Create a New Bookmark:
+   Go to Bookmarks > Bookmark manager, or simply press Ctrl+Shift+O on Windows/Linux or Cmd+Option+B on Mac.
+   Create a New Bookmark:
 
 3. In the Bookmark Manager, click the three-dot menu in the top-right corner of the window and select Add new bookmark.
-Enter Bookmark Details:
-    - Name: Enter a name for your bookmarklet, such as "13ft-ize". This name will show as a bookmark title in the bookmarks bar
-    - URL: Paste the JavaScript code provided above into the URL field.
+   Enter Bookmark Details: - Name: Enter a name for your bookmarklet, such as "13ft-ize". This name will show as a bookmark title in the bookmarks bar - URL: Paste the JavaScript code provided above into the URL field.
 4. Click Save.
 
 Using the Bookmarklet:

app/gunicorn.conf.py

@@ -0,0 +1,4 @@
+from os import environ
+
+# https://docs.gunicorn.org/en/stable/settings.html#settings
+bind = f"0.0.0.0:{environ.get('PORT', 5000)}"

app/portable.py

@@ -260,4 +260,5 @@ def get_article(path):
         return "Invalid URL", 400
 
 
-app.run(host="0.0.0.0", port=5000, debug=False)
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=5000, debug=False)

app/requirements.txt

@@ -1,3 +1,4 @@
-flask
-requests
 bs4
+flask
+gunicorn
+requests

requirements.txt

@@ -1,3 +1,4 @@
-flask
-requests
 bs4
+flask
+gunicorn
+requests