Starts <count> containers for the given service across the stack. If <count> is an absolute value like 2, then that will be the total of <count> containers across the application. If <count> is a relative value like [+2] or [-3], then the current total count of containers across the application will be changed by <count>. NOTE: the square brackets are required for relative count values.

$ cx services scale --stack <application name> <service name> <count>