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Create a .js file var radius = process.env.diameter / 2; var area = Math.pow(radius, 2) * Math.PI; console.log( `Area of a ${radius} cm radius disk: ${area} cm²` ); Create a file named Dockerfile and add the following code to it: FROM node:11-alpine ENV diameter=4.0 COPY compute.js . CMD node compute.js Open a command-line. Change the …
Continue reading “Enable an Image to Be Parameterized in Docker”
When a container writes files, it writes them inside of the container. Which means that when the container dies (the host machine restarts, the container is moved from one node to another in a cluster, it simply fails, etc.) all of that data is lost. It also means that if you run the same container …
Right click on My Computer >> Properties >> Advanced system settings >> System Properties window will get displayed Under Advanced >> Environment Variables Click on New to set Environment Variables Variable name: JAVA_HOME Variable value: C:\Program Files\Java\jdk1.8.0_121 Variable name: M2 Variable value: %M2_HOME%\bin Variable name: M2_HOME Variable value: C:\Program Files\Apache Software Foundation\apache-maven-3.5.0 Variable name: Path …
Continue reading “How to configure Maven PATH and use mvn on Windows command line”
Why Docker Why Containers Containers make deployment easy. Deploying is as simple as running a new container, routing users to the new one, and trashing the old one. It can even be automated by orchestration tools. Since it’s so easy, we can afford to have many containers serving a single application for increased stability during …