Jenkins. Running docker containers in parallel (declarative) - docker

Question

I want to run two docker container in declarative Jenkins pipeline, because I have container with backend which utilises Selenium server container for test. I know that there is a scripted example but I wonder if there is a declarative option.
Scripted looks like this:
node {
checkout scm
docker.image('mysql:5').withRun('-e "MYSQL_ROOT_PASSWORD=my-secret-pw"') { c ->
docker.image('mysql:5').inside("--link ${c.id}:db") {
/* Wait until mysql service is up */
sh 'while ! mysqladmin ping -hdb --silent; do sleep 1; done'
}
docker.image('centos:7').inside("--link ${c.id}:db") {
/*
* Run some tests which require MySQL, and assume that it is
* available on the host name `db`
*/
sh 'make check'
}
}
}

Answer 1

In the end I used description from here.
withRun - executes commands on the host
inside - inside the container
stage ('Test') {
steps {
// Create network where I will connect all containers
sh 'docker network create test'
script {
//withRun command starts the container and doesn't stop it untill all inside is executed.
//Commands inside are executed on HOST machine
docker.image('selenium/standalone-chrome').withRun("-p 4444:4444 --name=selenium -itd --network=test") {
docker.image("$CONTAINER_NAME:front").withRun("-p 3001:80 --name=front -itd --network=test") {
//We start backend container...
docker.image("$CONTAINER_NAME:back").withRun("-p 8001:80 --name=back -itd --network=test") {
//...and with inside command execute commands *surprise* inside the container
docker.image("$CONTAINER_NAME:back").inside("-itd --network=test") {
//execute commands inside the container
}
}
}
}
}
}
}