Persist shell across multiple sh calls in a groovy jenkins pipline - jenkins

Question

I have two groovy functions within a Jenkins pipeline that together logs into an ECR repo and builds a docker container. It looks like this:
def login() {
sh "aws ecr get-login --registry-ids <id> --region <region> --no-include-email"
sh "aws ecr get-login --region <region> --no-include-email"
}
def build(project, tag) {
login()
sh "docker build -t ${project}:${tag} ."
}
However, when I run this, I get pull access denied, as if I never logged in. I surmise this is because the aws ecr login commands ran in their own shells, and the build commands ran in another. Ideally, I'd like to leverage this kind of functional decomposition and other features of groovy, but run shell commands in one process/shell. Is this possible? How can I accomplish this?

Answer 1

The issue here is that aws ecr get-login returns a string containing the command to login to your registry. You will need to execute the result of that command, by assigning the output of the command to a variable and then executing that result, like so:
def login() {
loginRegistry = sh (script: "aws ecr get-login --registry-ids <id> --region <region> --no-include-email", returnStdout: true)
sh loginRegistry
loginRegion = sh (script: "aws ecr get-login --region <region> --no-include-email", returnStdout: true)
sh loginRegion
}
def build(project, tag) {
login()
sh "docker build -t ${project}:${tag} ."
}