Docker Executor

Beside using bare metal machine in Kraken CI jobs, it is possible to select a Docker executor. This can be made in the following way:

def stage(ctx):
    return {
        "parent": "root",
        "triggers": {
            "parent": True
        },
        "parameters": [],
        "configs": [],
        "jobs": [{
            "name": "Docker job",
            "steps": [{
                "tool": "shell",
                "cmd": "echo 'Hello World'"
            }],
            "environments": [{
                "executor": "docker",
                "system": "krakenci/ubuntu:20.04",
                "agents_group": "any",
                "config": "default"
            }]
        }]
    }

In the jobs list, in the environments section there are present:

• "executor": "docker", - this indicates that instead of bare metal machine a Docker container should be used to execute a job
• "system": "krakenci/ubuntu:20.04", - this indicated that particular Docker image should be used, in this case this is Ubuntu:20.04 from krakenci user on Docker Hub.

Images

There are many images prepared for Kraken CI Docker executor. They are available on Docker Hub:

Language Images

There are many images prepared for various programming languages.

Their usage, based on Hello World examples, can be seen on Demo Lab of Kraken CI: https://lab.kraken.ci/branches/33/ci

Language	Docker Hub	Dockerfile	Image
Clojure	krakenci/clojure	Dockerfile	clojure:1.11
Crystal	krakenci/crystal	Dockerfile	crystal:1.4
Dart	krakenci/dart	Dockerfile	dart:2.16
Elixir	krakenci/elixir	Dockerfile	elixir:1.13
Erlang	krakenci/erlang	Dockerfile	erlang:23.3
GNU C/C++	krakenci/gcc	Dockerfile	gcc:11.3
Go	krakenci/golang	Dockerfile	golang:1.18
Groovy	krakenci/groovy	Dockerfile	groovy:3.0
Haskell	krakenci/haskell	Dockerfile	haskell:9.2
Haxe	krakenci/haxe	Dockerfile	haxe:4.2
Julia	krakenci/julia	Dockerfile	julia:1.7
C# / Mono	krakenci/mono	Dockerfile	mono:6.12
Javascript / Node	krakenci/node	Dockerfile	node:18.0
Java / OpenJDK	krakenci/openjdk	Dockerfile	openjdk:11.0
Perl	krakenci/perl	Dockerfile	perl:5.34
Perl 6 / Rakudo	krakenci/rakudo	Dockerfile	rakudo:2021.04
PHP	krakenci/php	Dockerfile	php:8.0
Python	krakenci/python	Dockerfile	python:3.8
Ruby	krakenci/ruby	Dockerfile	ruby:3.1
Rust	krakenci/rust	Dockerfile	rust:1.60
Swift	krakenci/swift	Dockerfile	swift:5.6

System Images

System	Tags / Versions	Dockerfile	Base Image
Ubuntu 20.04	krakenci/ubuntu:20.04	Dockerfile	ubuntu:20.04
CentOS 8	krakenci/centos:8	Dockerfile	centos:8
Fedora 33	krakenci/fedora:33	Dockerfile	fedora:32

Tested Vanilla Images

• fedora:32
• fedora:33
• fedora:34
• fedora:35
• fedora:36
• fedora:37
• rockylinux:8
• rockylinux:9
• almalinux:8
• almalinux:9
• debian:buster
• debian:bullseye
• debian:bookworm
• ubuntu:18.04
• ubuntu:20.04
• ubuntu:22.04

For details, please, check a testing workflow results: https://lab.kraken.ci/branches/12/ci