Mount a volume in docker-compose conditionally

Question

I have a docker-compose.yml configuration. In one of the containers there is a Tomcat server and it has some default .war file deployed in we

Answer 1

Instead of (not) mounting a volume commenting out that line, I would use https://docs.docker.com/compose/extends/#example-use-case to run a service extension that specifies a volume.

I do this to tackle two different problems:

• I don't specify a volume when the docker image is meant to run in production and has all the necessary files bundled in it.
• I specify a volume during development, to check live changes.