Latest summary: If you simply want to deploy the latest Long-Term Support (LTS) version, you only need to modify containers/app.yml.
# Add the following configuration at the end
params:
version: esr
Then, rebuild the container. If you encounter any errors during the build, it is most likely a network issue, especially for users in China.
If you encounter an Oops error, please refer to this post: Oops error - Support - Discourse Meta