Hi, I recently tried Streamlit deployment to App Engine and wrote an article.
Let me link it here though this topic is already resolved as it has some additional info not written in this thread:
I think it answers all the questions here and also contains some more tips.
Here is a summary. Please read the article for the details.
the App must be deployed in the flexible (not standard) environment, with a Dockerfile
- Why is a container necessary?
As Randy (@randyzwitch ) answered, the flexible environment is necessary for WebSockets.
And the flexible environment is container-based, so “container is necessary” in that sense.
However, a custom runtime with original Dockerfile is not necessary. You can use pre-defined Python3 runtime.
Is there an official Streamlit tutorial for launching the “hello world” streamlit app on App Engine?
The article contains a small but complete example though it’s unofficial.