Update doc, zip, remove Dockerfile

doc/apps/dash.md

@@ -1,11 +1,15 @@
 # Dash
 
-To deploy a [Dash](https://dash.plotly.com/) application to Ploomber Cloud you need:
+To deploy a [Dash](https://dash.plotly.com/) application to Ploomber Cloud you need at least two files zipped up:
 
-- A `Dockerfile`
-- A Dash project
+1. Your application file (`app.py`)
+2. A dependencies file (`requirements.txt`)
 
-Note that your app should exist in an `app.py` file and be initialized in this way:
+## Required files
+
+You can use this [template](https://github.com/ploomber/doc/blob/main/examples/dash) to get started. 
+
+In the `requirements.txt` file, add all the dependencies that you need for your application to run. The application logic should exist in an `app.py` file and be initialized in this way:
 
 ```python
 # name your app "app"
@@ -14,30 +18,16 @@ app = Dash(__name__)
 server = app.server
 ```
 
-## `Dockerfile`
-
-Use this [template](https://github.com/ploomber/doc/blob/main/examples/dash/simple-app/Dockerfile) `Dockerfile`:
-
-```Dockerfile
-FROM python:3.11
-
-COPY app.py app.py
-COPY requirements.txt requirements.txt
-RUN pip install -r requirements.txt
-
-ENTRYPOINT ["gunicorn", "app:server", "run", "--bind", "0.0.0.0:80"]
-```
-
 ## Testing locally
 
-To test your app, you can use `docker` locally:
+To test the Dash application, you can run the following commands locally:
 
 ```sh
 # build the docker image
-docker build . -t dash-app
+pip install -r requirements.txt
 
-# run it
-docker run -p 5000:80 dash-app
+# Start the dash application
+gunicorn app:server run --bind 0.0.0.0:5000
 ```
 
 Now, open [http://0.0.0.0:5000/](http://0.0.0.0:5000/) to see your app.
@@ -47,6 +37,6 @@ Now, open [http://0.0.0.0:5000/](http://0.0.0.0:5000/) to see your app.
 
 Once you have all your files, create a zip file.
 
-To deploy a Dash app from the deployment menu, select the Docker option and follow the instructions:
+To deploy a Dash app from the deployment menu, select the Dash option and follow the instructions:
 
-![](../static/docker.png)
+![](../static/dash.png)

examples/dash/simple-app/app.py

@@ -12,6 +12,8 @@
 app = Dash(__name__)
 server = app.server
 
+app.title = "Population by country - Ploomber Cloud Dash Application"
+
 app.layout = html.Div(
     [
         html.H1(children="Population by country", style={"textAlign": "center"}),