# Specify the base image you want your dev container to use.
# You may use the same exact base image your application would use in production for consistancy.
# That could prevent surprises such as "works in local, but not in PROD".

FROM node:14.17.0-alpine

# Additionally you can install other dependencies for the environment while configuring the base image.
# In this example, I am installing Git as the Alpine version of node does not come with one. 

RUN apk update
RUN apk add git

{
    "name": "DevContainer ReactApp",

    // Provide the dev container with a Dockerfile that it can use to build an image and run the container.
    "dockerFile": "Dockerfile",

    // Command(s) to run before the container is created.
    // In this case we are installing the node modules.
    "initializeCommand": "yarn install",

    // Starts the development server every time the container starts.
    // This is triggered on reopening the container as well. 
    "postStartCommand": "yarn start",

    // Forward your application's port(s) running in the container to the local machine.
    "forwardPorts": [3000],

    // Required VSC code extensions that you want to automatically install for the developers to use.
    "extensions": [
        "dbaeumer.vscode-eslint",
        "esbenp.prettier-vscode",
        "eamodio.gitlens"
    ]

    // Use the devcontainer.json reference to explore all possible configurations.
    // https://code.visualstudio.com/docs/remote/devcontainerjson-reference
}