Example for deploying FastHTML app using Docker (#272)

* example fasthtml app deployment

* reference fasthtml example

examples/docker/fastHTML/Dockerfile

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+FROM python:3.11
+
+RUN apt-get update 
+
+COPY . /app
+
+WORKDIR /app
+
+RUN pip install -r requirements.txt --no-cache-dir
+
+ENTRYPOINT ["uvicorn", "app:app", "--host=0.0.0.0", "--port=80"]

examples/docker/fastHTML/README.md

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+# Docker Deployment with FastHTML App
+
+Example Dockerfile and FastHTML app to deploy on Ploomber Cloud. The fastHTML app code was obtained from the [FastHTML examples repository](https://github.com/AnswerDotAI/fasthtml/tree/main/examples). This app is a basic todo list item tracker. To deploy your own fastHTML app, replace the `app.py` code with your code and add any Python libraries used to `requirements.txt`. 
+
+![](todolist_app.png)

examples/docker/fastHTML/app.py

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+# This example was obtained from FastHTML's examples directory. You can check it out here: https://github.com/AnswerDotAI/fasthtml/blob/main/examples/basic_app.py
+
+# Run with: python basic_app.py
+from fasthtml.common import *
+
+def render(todo):
+    show = AX(todo.title, f'/todos/{todo.id}', 'current-todo')
+    edit = AX('edit',     f'/edit/{todo.id}' , 'current-todo')
+    dt = ' (done)' if todo.done else ''
+    return Li(show, dt, ' | ', edit, id=f'todo-{todo.id}')
+
+app,rt,todos,Todo = fast_app('data/todos.db', render, id=int, title=str, done=bool, pk='id')
+
+@rt("/")
+def get():
+    inp = Input(id="new-title", name="title", placeholder="New Todo")
+    add = Form(Group(inp, Button("Add")), hx_post="/", target_id='todo-list', hx_swap="beforeend")
+    card = Card(Ul(*todos(), id='todo-list'), header=add, footer=Div(id='current-todo')),
+    return Titled('Todo list', card)
+
+@rt("/")
+def post(todo:Todo):
+    return todos.insert(todo), Input(id="new-title", name="title", placeholder="New Todo", hx_swap_oob='true')
+
+@rt("/edit/{id}")
+def get(id:int):
+    res = Form(Group(Input(id="title"), Button("Save")),
+        Hidden(id="id"), CheckboxX(id="done", label='Done'),
+        hx_put="/", target_id=f'todo-{id}', id="edit")
+    return fill_form(res, todos[id])
+
+@rt("/")
+def put(todo: Todo): return todos.upsert(todo), clear('current-todo')
+
+@rt("/todos/{id}")
+def get(id:int):
+    todo = todos[id]
+    btn = Button('delete', hx_delete=f'/todos/{todo.id}', target_id=f'todo-{id}', hx_swap="outerHTML")
+    return Div(Div(todo.title), btn)
+
+@rt("/todos/{id}")
+def delete(id:int):
+    todos.delete(id)
+    return clear('current-todo')
+
+serve()

examples/docker/fastHTML/requirements.txt

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+python-fasthtml