7. Provide Multiple Env Files with Overload

With these files present in your working directory:

.env.env.dolorlorem.propertiespariatur.yaml

dotenv

ALIQUIP=laboris

dotenv

VOLUPTATE=voluptate et amet

properties

ALIQUIP=non laboris

yaml

commodo: Dolor ipsum tempor ${ALIQUIP}
mollit:
	- officia ${VOLUPTATE} minim

When the following command is executed:

$ dotenv-subst --overload --env-file=.env --env-file=.env.dolor --env-file=lorem.properties pariatur.yaml

The interpolated output is written to the file(s) below:

pariatur.yaml

yaml

commodo: Dolor ipsum tempor non laboris
mollit:
	- officia voluptate et amet minim

🔍 Further Reading

Check out the supported syntax for defining interpolation variables in your source files.
All available command options and flags are documented in CLI Options Reference.