使用 sed 替换的正则表达式

Question

What could be the sed syntax to replace the text from a yaml(qa.yaml) file which contain below line.

image: "1xxxxxxxxxx.dkr.ecr.eu-west-2.amazonaws.com/abc-zyx-123/prod:a.b.c" 
image2: "1xxxxxxxxxx.dkr.ecr.eu-west-2.amazonaws.com/abc-zyx-456/prod:1.2.3.4" 

Now I what to replace the last version ie "1.2.3" and "2.3.4" from the yaml file during docker build. I am taking parameter value from Jenkins. So lets say 1st parameter is image and second parameter is image2

I could have done but this abc could be change so what the best reg expression for this scenario?

RUN sed -i -e "s@\a.b.c/$image" /qa.yaml

Thank you for helping

Answer 1

Use

sed -i "s@[^:][^:]*\$@$image" /qa.yaml

It will replace one or more characters other than a colon at the end of the string with the text in the image variable that should not contain @ character. If it is there, replace @ with # , or ~ , or , , just make sure there is no such character in the image .