Appium tutorial with live project code#
To build an image from this file, put the file into a directory with your application code and then from that directory run docker build.
Appium tutorial with live project install#
Note that you did not have to install Node.js as it is already installed and in the default path as part of the node:12.13.1 base image. This Dockerfile simply copies your application code (server.js) into the official image with the node:12.13.1 binaries and indicates that server.js should be run when the image is started. The simplest Dockerfile is as follows: FROM node : 12.13.1 Once you’ve chosen your base image, the next step is to actually build the image which bundles in your application. You should likely use both the standard Debian image along with the Slim image in a multistage build in order to achieve a smaller resulting image size.This means that they are built from source and there is more risk of regressions. Alpine binaries are not built as part of the main Node.js releases.When choosing your base image, keep in mind: There are a number of tags that you can use to specify the image you want. Alpine-based images for those who need the smallest container size.Slim images which are Debian-based images with only the minimal packages needed to run a Node.js application after it is already built.Debian-based images with the core components needed to build and test Node.js applications.There are three variants of the Node.js images: For example, when 12.13.1 was released, the new Docker image “node:12.13.1” was made available. These images add the Node.js binaries to an existing Linux distribution (Debian or Alpine) and offer a way to bundle your application into the image so that it runs when you start the Docker container.Įach time the project publishes a new release, it creates new Docker images. When building Node.js applications, the community provides a number of official Docker images that you can start with. To do that, you typically start with an existing image and layer in the additional components that you need. Upgrading and maintaining containerized applicationsĭeploying to Docker or Kubernetes requires that you build a Docker image.In this article, I try to answer the question: “As a Node.js devleoper, what do I need to know about Kubernetes?” I cover a number of key tasks you must complete when building your Node.js application in a cloud-native manner, including: