gitlab-ci.xml：script config should be a string or an array of strings

The following command in a job script:

STATUS_ID=$(grep -Eo "Status Code [0-9]+: Done" somefile | grep -Eo "[0-9]+")

Seems to be causing the following ci lint error:

script config should be a string or an array of strings

The colon (:) makes the line be interpeted as yaml map.

The solution (to escape the special meaning of the colon) is to enclose the entire line in single quotes:

'STATUS_ID=$(grep -Eo "Status Code [0-9]+: Done" somefile | grep -Eo "[0-9]+")'