How to pass in a different config file when running a stellar quickstart docker container?

Question

The Stellar quickstart contains a config file at stellar/core/etc/stellar-core.cfg which it uses by default to start stellar core once the container is first run.

How can do a first run of the stellar core using another tailor-made config file for our production instance of stellar core with the configurations required?

Is there a way to pass in another config file to be used when executing the docker run command on the container?

In other words, a way to pass in the configuration file from the host (instead of running stellar-core run --conf betterfile.cfg inside the container)?

Thanks for any help.

Answer 1

1. You can enter the docker container with docker exec -it stellar /bin/bash
2. Then enter supervisorctl
3. and then enter stop stellar-core. This will stop stellar-core.
4. Enter exit to exit supervisor.
5. Then edit the stellar-core.cfg file in the base directory of the docker container.
6. Type supervisorctl again and type start stellar-core

Answer 2

You can try to mount your config file to the container https://docs.docker.com/storage/volumes/

So you can try to do something like docker run -v myconfigfile.cfg /path/to/config/file/in/container

Answer 3

We have successfully customized our stellar-core configuration by following the documentation of https://hub.docker.com/r/stellar/quickstart/

To customize the configurations that both stellar-core and horizon use, you must use persistent mode. The default configurations will be copied into the data directory upon launching a persistent mode container for the first time.

…

It is recommended that you stop the container before editing any of these files, then restart the container after completing your customization.