Goal: create a docker image for a vscode dev-container.

Context: Despite the ton of resources for such a topic available on the internet, I am experiencing troubles to figure out how to make users safely push to github.com from a vscode dev-container.
The host is Windows (latest), the container’s OS is Ubuntu Jammy.
The key idea is to create a dev-container that is just as simple to use as WSL.

What I tried so far (perhaps not in the good way):

• playing with ssh-agent
• playing with gh auth login
• playing with git credential manager

Ideally, I’d rather not copy the ssh keys into the container.

.devcontainer/devcontainer.json:

{
    "name": "devcontainer",
    "dockerComposeFile": "./docker-compose.yaml",
    "service": "dev_toolchain",
    "workspaceFolder": "/workspace",
    "shutdownAction": "stopCompose",
    "overrideCommand": true,
    "features": {
        "ghcr.io/devcontainers/features/git:1": {},
        "ghcr.io/devcontainers/features/github-cli:1": {},
        "ghcr.io/devcontainers/features/sshd:1": {}
    },
    "customizations": {
        "vscode": {
            "settings": {
                "terminal.integrated.defaultProfile.linux": "zsh",
                "terminal.integrated.profiles.linux": { "zsh": { "path": "/bin/zsh" } },
                "remote.SSH.showLoginTerminal": true
            },
            "extensions": [
                // some extensions
            ]
        },
        "postCreateCommand": {
            "git-safe-dir-workspace": "git config --global --add safe.directory /workspace"
        }
    }
}

docker-compose.yaml:

version: '3.8'

services:
  dev_toolchain:
    environment:
      - SSH_AUTH_SOCK=/ssh-agent
    build:
      context: .
      dockerfile: ./Dockerfile
      args:
        BASE_IMAGE: 'ubuntu:jammy'
      ssh: # requires ssh-agent service running on host
        - default
    ports:
      - "2222:22"
    volumes:
      - ..:/workspace
    cap_add:
      - SYS_PTRACE
    security_opt:
      - seccomp:unconfined

And the Dockerfile installs various development tools.

Thanks for you time and help !
If some informations are missing, just ask me and I’ll update this post.