Fix #32 again, since yq arguments have changed

[DaVarga]

Seems like the updated yq version has different arguments. Hence we got following error.

Error: unknown shorthand flag: 'y' in -y
Usage:
  yq [flags]
  yq [command]

Examples:

# yq defaults to 'eval' command if no command is specified. See "yq eval --help" for more examples.

# read the "stuff" node from "myfile.yml"
yq '.stuff' < myfile.yml

# update myfile.yml in place
yq -i '.stuff = "foo"' myfile.yml

# print contents of sample.json as idiomatic YAML
yq -P sample.json

Im using the -i option from yq to update the image-tag inside the docker-compose.yml in place.

[thetredev]

Thanks, that's much cleaner.