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Nodejs Nodemailer example

Hello. In this tutorial, we will understand the nodemailer module in a simple nodejs application. We will set up a fake smtp server (e.g. smtp4dev) for localhost development and understand the package implementation. smtp4dev is an open-source service that emulates an smtp email server for email testing and debugging purposes. 1. Introduction Nodemailer is an npm module used for sending ...

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Join query in MongoDb and Nodejs

Hello. In this tutorial, we will understand how to perform join query in Mongodb using Node.js. To set up Mongodb I will be using Docker. 1. Introduction The $lookup operator in Mongodb is an aggregation operator and is used to perform join aggregate in Mongodb. This operator is used to join a document from one collection to a document in ...

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Run Docker Commands in Python

set python

Hello in this tutorial, we will create a simple python flask application and run the docker commands from the python script. 1. Introduction Flask in python programming helps to build web applications. It is easier than Django’s framework and requires less base code to implement a simple web application. To set up the application we’ll first require to install python. ...

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Running a Python App in a Docker Container

Hello in this tutorial, we will explain how to run a Python app in a Docker container. More specifically, we will create a python Flask application with SQLite and deploy it on Docker. 1. Introduction SQLite is a software library that provides a relational database management system. It is lightweight in terms of setup, database administration, and required resources. It ...

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An Intro to Spring Cloud Vault

Welcome, this is an intro to Spring Cloud Vault. We will see how to integrate HashiCorp Vault in a spring boot application. Vault is an application that stores secrets and this information is stored in 256AES encrypted form. For this tutorial, we will start the Vault server in development mode. 1. Introduction Before going further in this tutorial, we will ...

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Docker Elasticsearch Integration Tutorial

Welcome readers, in this tutorial, we will discuss how to start (or integrate) ElasticSearch on Docker. Please note as I have limited access to the resources so I will keep this tutorial simple and easy. 1. Introduction to Docker In the present world, Docker is an important term, Often used in CI/CD platform that packages and runs the application with ...

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Selenium Docker Example

This article is about using Selenium grid to automate testing efforts. This covers using selenium inside a Docker container to speed up the testing setup and easier administration. 1. Introduction 1.1 Selenium Grid Selenium is used to automate browsers. Selenium WebDriver has found its place in test automation for web applications. It is used to create robust, browser-based regression automation ...

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Docker Test Example

1. Introduction Continuous integration and continuous deployment has become one of the most common use cases of Docker early adopters. CI/CD merges development with testing, allowing developers to build code collaboratively, submit the master branch, and check for issues. This allows developers to not only build their code, but also test their code in any environment type and as often ...

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Docker Compose Example

1. Introduction Docker Compose is a tool for defining and running multi-container Docker applications. With Compose, you define in a configuration file the set of docker containers that the application requires a specific machine. Then, using a single command, you create and start all the services in a single host. Docker Compose is especially useful for the following use case ...

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