go_caddy_url_updater

Small Go service listening for GitHub push webhooks and updating a Caddy configuration before triggering a reload. On startup it also checks the configured branch on GitHub and, if the local Caddyfile hash lags behind, performs the update and reload automatically. Core logic resides in main.go via main.updateCaddyfile and main.reloadCaddyInContainer.

Prerequisites

• Go 1.25 or newer
• Docker socket access (default $ /var/run/docker.sock $)
• Running Caddy container

Configuration

Variable	Default	Purpose
CADDYFILE_PATH	/etc/caddy/Caddyfile	Path to the Caddyfile inside the container
CADDY_CONTAINER	caddy	Container name for reload execution
DOCKER_SOCK	/var/run/docker.sock	Docker socket path used for API calls
GITHUB_SECRETKEY	secret	Secret for webhook signature verification
DISCORD_WEBHOOK_URL	(empty)	Discord webhook endpoint for success and failure notifications
GITHUB_REPO_OWNER	intro-skipper	Owner used when checking the deployed binary against GitHub
GITHUB_REPO_NAME	manifest	Repository name used for commit verification
GITHUB_REPO_BRANCH	main	Branch considered the canonical reference for commit verification
GITHUB_TOKEN	(empty)	Optional token for GitHub commit lookups (avoids low rate limits)

Run

go run ./...

The HTTP server exposes /hook on port 8080 and expects GitHub push events.