···20202121<hr style="margin-bottom: 20px; margin-top: 10px" />
22222323-This can be done in a compose file as well by specifying it as an build
2424-argument.
2323+When using compose, it can be specified as a build argument which will be
2424+passed to the builder.
25252626```yaml
2727build:
···2929 args: { TAG: master }
3030```
31313232-Will tell docker to pass the `TAG` argument to the `Dockerfile` when building.
3232+This will for example tell docker to build it using the `master` branch like
3333+the command.
33343435## Setting Up The Image
3536