ecs-cli allow family name to be passed from the command line

[theladyjaye]

I appreciate the autogenerated name, but I would like to be able to explicitly tell it what the family name should be instead of ecscompose-{{project name}}

[uttarasridhar]

With the v0.3.0 release, we have made the prefix used by task definitions configurable by supplying --compose-project-name-prefix to ecs-cli configure command. You can find more information in the docs.

Before:
Format : ecscompose-{{project name}}

v0.3.0+ :
Format : {{compose-project-name-prefix}}{{project-name}}
If you set --compose-project-name-prefix to empty, the family name will default to project-name.

Hope that helps your use case.