$ echo '{"name":"","category":"spirit","unit":"oz"}' | ./mixology ingredients create --stdin
name is required
$ echo $?
10

$ ./mixology ingredients create --category spirit --unit oz "London Dry Gin"
insert ingredient "London Dry Gin"
$ echo $?
40

$ ./deck-error-probe # injected Internal failure from chapter 1.3
Readiness is temporarily unavailable
$ echo $?
50