interpolate envs from .env file in ecs-params.yml

[gffuentes]

I would like to use environment variables in ecs-params.yml as defined in the default .env file for docker.

Context

An example might be:

.env

ENVIRONMENT=qa

ecs-params.yml

      secrets:
        - name: USERNAME
          value_from:  arn:aws:ssm:us-east-1:XXXXX:parameter/${ENVIRONMENT}/USERNAME

[stgrmks]

would be a very useful feature!

[damian-keska]

I'm looking for this feature, current behavior is inconsistent.

[QAnders]

Second this, or at least be able to use OS vars, e.g. export ENVIRONMENT=qa