“It works on my machine.” It’s a phrase every developer has likely experienced or said at least once. Subtle differences between the development environment and the production environment where the actual service runs are a major cause of unexpected bugs and deployment failures. This is due to numerous variables like library versions, operating systems, and system configurations. The technology that emerged to solve these problems is Docker.
Docker packages an application and all its dependencies into an isolated space called a ‘container,’ ensuring it runs identically in any environment. This allows developers to easily set up an environment on their local PC that is nearly identical to production and share a consistent development environment with team members. In this post, we will provide a practical, step-by-step guide to building a multi-container development environment using Docker Compose, consisting of the Python Django web framework, a PostgreSQL database, and a Redis cache server.
Many developers have likely heard or said the phrase, “But it works on my machine!” at some point during collaboration. Subtle differences in operating systems, library versions, and configuration settings among developers can cause unexpected bugs. Moreover, new team members often spend a significant amount of time on complex development environment setup processes. This is a persistent problem that hampers productivity.
The technology that emerged to solve these problems is Docker. Docker packages an application and its dependencies into an isolated space called a Container, ensuring it runs identically in any environment. This minimizes discrepancies between development, testing, and production environments, fundamentally solving the “it only works on my machine” issue.
In this post, from the perspective of an experienced server engineer, I will explain why you should adopt Docker for your development environment. I will also provide a detailed, step-by-step guide to building a consistent and efficient development environment by creating a Dockerfile and docker-compose.yml for a simple Node.js application.
In today’s fast-paced development world, efficiently managing multiple development environments is essential.
Windows Subsystem for Linux 2 (WSL2) provides a powerful and flexible way to create and manage isolated environments directly on your Windows 11 machine.
Whether you’re a software developer or a hobbyist, having separate environments for different projects can streamline your workflow and minimize conflicts.
This guide will walk you through setting up and configuring multiple WSL2 instances on Windows 11, ensuring you can optimize your development productivity.
The reason why the Full (strict) SSL mode in Cloudflare doesn’t work while the Full mode does is typically due to issues with the SSL certificate provided by the origin server,
in this case, GitHub Pages. The Full (strict) mode requires that the SSL certificate on the origin server is not only valid but also trusted by a recognized Certificate Authority (CA),
matches the requested domain, and includes a correct certificate chain.
However, if the GitHub Pages SSL certificate is not fully compliant with these requirements—such as a missing intermediate CA,
domain mismatch, or setup delay—Cloudflare will reject the connection in Full (strict) mode. Conversely, the Full mode does not validate the certificate’s trustworthiness,
which allows it to function even if there are issues with the certificate.
When installing Node.js on Windows 11, you may encounter errors related to additional package installations.
These errors often occur due to the necessity to compile some Node.js packages using C/C++ and Python.
This guide provides detailed solutions to efficiently resolve these issues and ensure a smooth installation process.
One common error arises from the use of chocolatey for installing additional tools.
If visualstudio2019-workload-vctools cannot be installed in the existing chocolatey path, it may result in installation failures.
The installation process involves displaying a CMD screen where the installation proceeds using PowerShell.
Despite several attempts, you might find that a clean installation cannot be achieved.