Usually, for running tests using selenium we download selenium standalone server JAR file and chrome driver and start selenium server with a command which usually looks like: But, I suggest you use Linux, preferably Ubuntu for this blog/tutorial as later we will use a docker network command that works only on Linux.Īnd follow docker post-install instructions given usually at the end of the 'installation instructions' page to create a docker group. Containers are completely isolated environments that can have their own processes, services, and network interfaces just like virtual machines except they all share the same OS kernel.įollow the installation instructions given in to install docker according to your operating system.

With docker, we are able to run all the three apps in a separate container with its own dependencies and libraries, all within a single machine. In this case, docker is an efficient and cost-effective solution to this problem. We can solve this problem either by having three different machines, or a single machine, which is powerful enough to host and run three virtual machines on it.īut both solutions are quite cumbersome. Now, we cannot host all three applications on the same machine as different versions of nodejs and other dependencies are required. Each of these applications makes use of a different version of nodejs and mongodb, as well as the associated libraries and dependencies, which differ from one application to another. Let’s say you have three different nodejs applications that you plan to host on a single server. A docker container is basically a software package that consists of all the dependencies required to run an application. It does this by virtualizing the operating system of the computer on which it is installed and running. Can you recall how many times you face an issue where code runs in another developer's machine but doesn't work on yours? Docker at a very basic level resolves this issue of an application working on one platform and not working on some other platform.ĭocker is a tool which is used to automate the deployment of applications in lightweight containers so that applications can work efficiently in different environments.

Selenium on ubuntu