How to Quickly Get a Running Development Environment

.devcontainer.json

{
    "name": "hello-devcontainers",
    "image": "mcr.microsoft.com/devcontainers/go:1.22",
    "features": {
        "ghcr.io/devcontainers-contrib/features/apt-get-packages:1": {
            "packages": "inotify-tools,bash-completion"
        }
    },
    "customizations": {
        "vscode": {
            "settings": {},
            "extensions": [
                "golang.go"
            ]
        }
    },
    "runArgs": [
        "--userns=keep-id"
    ],
    "containerUser": "vscode"
}

go.mod

module hello-devcontainers

go 1.22.1

main.go

package main

import (
	"fmt"
	"net/http"
)

func main() {
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "Hello, World!\n")
	})

	if err := http.ListenAndServe(":9080", nil); err != nil {
		fmt.Println("Error starting server:", err)
	}
}