Curl in Kubernetes agent on Jenkins - docker

Question

I have a script that uses curl and that script should be run in Kubernetes agent on Jenkins. Here is my original agent configuration:
pipeline {
agent {
kubernetes {
customWorkspace 'ng-cleaner'
yaml """
kind: Pod
metadata:
spec:
imagePullSecrets:
- name: jenkins-docker
affinity:
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: agentpool
operator: In
values:
- build
schedulerName: default-scheduler
tolerations:
- key: type
operator: Equal
value: jenkins
effect: NoSchedule
containers:
- name: jnlp
env:
- name: CONTAINER_ENV_VAR
value: jnlp
- name: build
image: tixartifactory-docker.jfrog.io/baseimages/helm:helm3.2.1-helm2.16.2-kubectl.0
ttyEnabled: true
command:
- cat
tty: true
"""
}
}
The error message is "curl ....
/home/jenkins/agent/ng-cleaner#tmp/durable-0d154ecf/script.sh: 2: curl: not found"
What I tried:
added shell step to main "build" container:
shell: sh "apk add --no-cache curl", also tried "apt install curl"- didn't help
added new container with curl image:
- name: curl
image: curlimages/curl:7.83.1
ttyEnabled: true
tty: true
command:
- cat - didn't help as well
Any suggestions on how I can make it work?

Answer 1

I resolved it.
It was needed to add shell step to main container:
shell: sh "apk add --no-cache curl"
and then place my script inside container block:
stages {
stage('MyStage') {
steps {
container('build'){
script {