AWS Lightsail tutorial not working

Question

I am following this exact example, and copy pasted the exact same steps / code: https://aws.amazon.com/tutorials/serve-a-flask-app/

However my container fails to deploy with the following error:
![Failed-Deployment](/media/postImages/original/IM54wsFnDoRgCb_gsedbtu_Q)

app.py:

```
from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
   return "Hello, World!"

if __name__ == "__main__":
   app.run(host='0.0.0.0', port=5000)
```

requirements.txt:
```
flask===3.0.0
```

Dockerfile:
```
# Set base image (host OS)
FROM python:3.12-alpine

# By default, listen on port 5000
EXPOSE 5000/tcp

# Set the working directory in the container
WORKDIR /app

# Copy the dependencies file to the working directory
COPY requirements.txt .

# Install any dependencies
RUN pip install -r requirements.txt

# Copy the content of the local src directory to the working directory
COPY app.py .

# Specify the command to run on container start
CMD [ "python", "./app.py" ]
```
containers.json:
```
{
  "flask": {
      "image": ":flask-service.flask-container.5",
      "ports": {
          "5000": "HTTP"
      }
  }
}
```
public-endpoint.json:
```
{
  "containerName": "flask",
  "containerPort": 5000
}
```

Answer

Try to remove the extra `=` sign in your requirement.txt: `flask==3.0.0` and try again.

AWS Lightsail tutorial not working

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