This section describes how to install/run Jenkins on different platforms and operating systems. Installation platforms Docker Installing Docker Downloading and running Jenkins in Docker Docker is a platform for running applications in an isolated environment called a "container" (or Docker container). Applications like Jenkins can be downloaded as read-only "images" (or Docker images), each of which is run in Docker as a container. A Docker container is in effect a "running instance" of a Docker image. From this perspective, an image is stored permanently more or less (i.e. insofar as image updates are published), whereas containers are stored temporarily. Read more about these concepts in the Docker documentation’s Getting Started, Part 1: Orientation and setup page. Docker’s fundamental platform and container design means that a single Docker image (for any given application like Jenkins) can be run on any operating system (e.g. macOS, Linux and Windows) which is also running Docker. To install Docker on your operating system, visit the Docker website and navigate to  Get Docker  at the top of their site to begin accessing the Docker download that is suitable for your operating system. Follow the installation instructions on their website. If you are installing Docker on a Linux-based operating system, ensure you configure Docker so it can be managed as a non-root user. Read more about this in Docker’s Post-installation steps for Linux page of their documentation. This page also contains information about how to configure Docker to start on boot. A new  jenkinsci/blueocean  image is published each time a new release of Blue Ocean is published. You can see a list of previously published versions of the jenkinsci/blueocean  image on the tags page. There are also other Jenkins Docker images you can use (accessible through jenkins/jenkins  on Docker Hub). However, these do not come with Blue Ocean, which would need to be installed via the  Manage Jenkins  >  Manage Plugins  page in Jenkins. Read more about this in Getting started with Blue Ocean. The recommended Docker image to use is the  jenkinsci/blueocean  image (from the Docker Hub repository). This image contains the current Long-Term Support (LTS) release of Jenkins (which is production-ready) bundled with all Blue Ocean plugins and features. This means that you do not need to install the Blue Ocean plugins separately. There are several Docker images of Jenkins available. 4 CAUTION NOTE