Learning and experimenting with VS Code Dev Containers, Docker-based development environments, and reproducible developer workflows.
This repository explores how Dev Containers standardize development environments and simplify project onboarding.
The goal of this project was not to build a feature-rich application, but to understand:
- development environment standardization
- Docker and Dev Containers
- development workflow
- Dev Container lifecycle
devcontainer.json- Dockerfile integration
- workspace configuration
- developer experience
The project was built step-by-step while experimenting with:
- VS Code Dev Containers
- Docker
- Dockerfile
devcontainer.json- Workspace Mounts
- Port Forwarding
- Lifecycle Commands
Different developers often work with different operating systems, runtime versions, dependencies, and local configurations.
Although the application code is the same, the development environment is different.
Dev Containers solve this by providing a consistent development environment for every developer.
When a project containing a .devcontainer directory is opened, the editor reads the configuration, builds the development image, creates the container, mounts the workspace, installs the required development configuration, and attaches the editor to the container.
This provides a ready-to-use development environment with minimal manual setup.
devcontainer.json is the central configuration file of a Dev Container.
It defines how the development environment should be configured, including build settings, workspace configuration, lifecycle commands, editor customization, and developer experience.
Unlike a Dockerfile, it focuses on configuring the development environment rather than building the container image.
A Dev Container follows a predictable lifecycle.
The image is built, the container is created, lifecycle commands are executed, the editor attaches to the container, and the development environment becomes ready for use.
This repository explores the purpose of each lifecycle stage and when it is executed.
- understanding why Dev Containers exist
- difference between Docker and Dev Containers
- Dev Container lifecycle
- responsibilities of
devcontainer.json - Dockerfile integration
- workspace mounting
- lifecycle commands
- developer environment standardization
.
├── .devcontainer
│ ├── Dockerfile
│ └── devcontainer.json
│
├── config
├── src
├── .env.example
├── .gitignore
├── package.json
└── package-lock.json
git clone https://github.com/100NikhilBro/devcontainer-lab.gitnpm install- Start Docker Desktop
- Open the project in VS Code
- Install the Dev Containers extension
- Select Rebuild and Reopen in Container
npm run devThis repository was created to understand how Dev Containers improve developer workflows by providing consistent and reproducible development environments.
The focus was on learning the development lifecycle, configuration, and workflow rather than building a feature-heavy application.
Maintained by Nikhil Gupta.