![]() This is what app. ![]() The directory structure should look like this: - project's root folder Docker Desktop for Linux A native Linux application that delivers all Docker tools to your Linux computer. Docker Desktop for Windows A native Windows application that delivers all Docker tools to your Windows computer. Let's first put together a simple node.js/Express application that displays some text. Docker Desktop for Mac A native application using the macOS sandbox security model that delivers all Docker tools to your Mac. Under normal circumstances a Docker image starts up one process but with this article I'd like to show you how you can initiate multiple applications inside your images. The image will then start both a MarkLogic instance as well as node.js and it'll expose 3 different ports - 2 for managing the MarkLogic (database) instance and one to access the node.js application. As part of this article I am going to setup a docker image using the Dockerfile that will install MarkLogic (a NoSQL document database) along with node.js. This file specifies the base OS and all further installation and setup steps. Images can be built automatically by reading commands and instructions setup in a file called Dockerfile. Simply open up your ~/.bash_profile and copy the export statements in there.) (The first them when you do this you'll be asked to setup your environment variables - this is advised. To start Boot2Docker you can execute the boot2docker start in your command line. ![]() This tool is uses as it's going to be the what allows us to run the Docker containers themselves. To verify a successful installation you can open up the command line and type in docker -v which should return the Docker version information.ĭocker utilises Boot2Docker (a tool that is installed when you install Docker) which is lightweight Tiny Core Linux installation running inside VirtualBox. Once you start a process in Docker from an image it'll become an active container which is a stateful instantiation of an image.įor the rest of the article I am going to assume that you have already installed Docker on Mac OS X. In other words an image is a set of layers that you've installed. You then install applications on top of it - for example node.js. Normally you start off by having a 'base image' which is a 'clean' OS installation. There are lots of introductory articles on Docker and I will only give you a high lever overview.ĭocker is an open platform dor developers and sysadmints to build, ship and run distributed applications There was another driver behind my curiosity - for a long time now I've been looking for a solution to be able to package up my workshop material to be able to distribute it amongst attendees. ![]() There has been a lot of buzz around Docker recently and as always I couldn't resist the temptation and I had to try it out. Of the content may be relevant please take it with a pinch of salt. Screenshots may be missing and links could be broken. ![]()
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