docker-compose args from shell

Question

I want to build via the docker-compose an image that uses my private key for cloning private git repos.

More or less the compose becomes as fol

Answer 1

You can use the same syntax with docker-compose build:

docker-compose build --build-arg RSA="$(cat ~/.ssh/id_rsa)"

Unfortunately, you can't use the build-args option with compose up or start... So you will need to build and then run using the --no-build option