A collection of Dev Container Features published to ghcr.io/w3cj/devcontainer-features.

Add features to your devcontainer.json:

{
    "features": {
        "ghcr.io/w3cj/devcontainer-features/firewall:latest": {
            "githubIps": true,
            "claudeCode": true
        }
    }
}

• Dev Container CLI
• Docker

Test all features:

make test

Test a specific feature:

make test-feature feature=firewall

Features are published via the Release GitHub Action workflow (manual trigger).

• devcontainers/feature-starter for the base starter project
• devcontainers-extra/features for tons of features to use as examples / inspiration
• centminmod/claude-code-devcontainers for the initial firewall allow list