listens for git webhooks and runs bash scripts when they arrive
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README.md

gitdeploy

gitdeploy is an app for continuous deployment of static websites.

  1. Point a domain to a server running gitdeploy
  2. Set git webhooks (Github, Gitea, Bitbucket, etc)
  3. Create build & deploy scripts from the examples
  4. Profit (when you push, the build will kick off)

Features

gitdeploy is intended for use with static websites that are generated after changes are pushed to a Git repository. This works with sites that are being edited in code and tracked in Git. Sites that have their content managed with a headless CMS that pushes to Git are also very well-suited.

gitdeploy supports verified webhooks from Github, Bitbucket, and Gitea.

gitdeploy is written in Go. This means that it’s a standalone binary available on all major operating systems and architectures. It provides an API with endpoints that handle webhooks, allow for initiation of builds, and getting the status of builds and build jobs.

gitdeploy comes with a simple interface. The interface be disabled if you don’t want to use it.

Usage

gitdeploy init
gitdeploy run --listen :3000 --scripts ./scripts/
Usage of gitdeploy run:
  -listen string
    	the address and port on which to listen (default :4483)
  -github-secret string
    	secret for github webhooks (same as GITHUB_SECRET=)
  -bitbucket-secret string
    	secret for bitbucket webhooks (same as BITBUCKET_SECRET=)
  -gitea-secret string
    	secret for gitea webhooks (same as GITEA_SECRET=)
  -scripts string
    	path to ./scripts/{deploy.sh,promote.sh,etc}
  -trust-repos string
    	list of repos (ex: 'github.com/org/repo', or '*' for all) for which to run '.gitdeploy/deploy.sh'
  -compress
    	enable compression for text,html,js,css,etc (default true)
  -promotions string
    	a list of promotable branches in descending order (default 'production,staging,master')
  -serve-path string
    	path to serve, falls back to built-in web app
  -trust-proxy
    	trust X-Forwarded-For header

Install

You can download gitdeploy from the Github Releases API and place it in your PATH, or install it with Webi (webinstall.dev/gitdeploy):

Mac, Linux:

curl -sS https://webinstall.dev/gitdeploy | bash

Windows 10:

curl -A MS https://webinstall.dev/gitdeploy | powershell

Manual Install

See https://github.com/therootcompany/gitdeploy/releases.

Git SSH Deploy Keys and Tokens

All of the clone URLs are HTTPS clone URLs.

To use SSH clone URLs, you should update your git credentials:

git config --global url."ssh://git@github.com/example-org/".insteadOf "https://github.com/example-org/"

This will add an entry like this to your .gitconfig:

[url "ssh://git@github.com/example-org/"]
    insteadOf = https://github.com/example-org/

For more info see The Git Credentials Cheat Sheet at https://coolaj86.com/articles/vanilla-devops-git-credentials-cheatsheet/.

Setup with Deploy Scripts

Start by initializing your .env and ./scripts directory.

gitdeploy init
.env
scripts/
├── deploy.sh
├── git.example.com/org/go-project/deploy.sh
├── git.example.com/org/node-project/deploy.sh
├── git.example.com/org/mirror-project/deploy.sh
└── promote.sh

The default deploy.sh is sensible - if another deploy.sh exists in a directory with the same repo name as an incoming webhook, it runs it.

The example deploy scripts are a good start, but you’ll probably need to update them to suit your build process for your project.

In-repo .gitdeploy scripts

A repo my have its own .gitdeploy/deploy.sh at its root, but by default these are ignored.

You can set --trust-repos (or TRUST_REPOS) to allow deploy scripts to be run directly from a repository.

  • matches are case-insensitive (foo matches Foo)
  • a wildcard * may be used (at the end of a string) to define a prefix
  • the list may be space ' ' or comman , delimited
# trust a few repos to run their own deploy scripts
gitdeploy run --listen :3000 --trust-repos 'github.com/org/one github.com/org/two'

# trust an organization
gitdeploy run --listen :3000 --trust-repos 'github.com/org/*'

# trust all repos
gitdeploy run --listen :3000 --trust-repos '*'

Git Info

These ENVs are set before each script is run:

GIT_REPO_ID=github.com/my-org/my-project

GIT_CLONE_URL=https://github.com/my-org/my-project.git

GIT_DEPLOY_JOB_ID=xxxxxx
GIT_REF_NAME=master
GIT_REF_TYPE=branch
GIT_REPO_OWNER=my-org
GIT_REPO_NAME=my-project
GIT_REPO_TRUSTED=true

API

GET  /api/admin/jobs

    {
      "success": true,
      "jobs": [
        {
          "job_id":     "xxxx",
          "created_at": "2020-01-01T00:00:00Z",
          "ref":        "0000000",
        }
      ]
    }

POST /api/admin/jobs
  { "job_id": "xxxx", "kill": true }

  { "success": true }

# note: see --help for how to use --promotions
POST /api/admin/promote
  { "clone_url": "https://...", "ref_name": "development" }

  { "success": true, "promote_to": "staging" }

# note: each webhook is different, but the result is to run a deploy.sh
POST /api/admin/webhooks/{github,gitea,bitbucket}

Build

Frontend:

pushd html/
  npm ci
  scripts/build
popd

API:

With GoReleaser:

goreleaser --snapshot --skip-publish --rm-dist

With Golang:

export GOFLAGS="-mod=vendor"

go run -mod=vendor git.rootprojects.org/root/go-gitver/v2
go generate -mod=vendor ./...
go build -mod=vendor .

You can use build tags to remove providers from the build:

go build -mod=vendor -tags nobitbucket,nogithub .

Supported tags are:

  • nogithub
  • nogitea
  • nobitbucket

Run as a System Service

sudo env PATH="$PATH" \
  serviceman add --name gitdeploy --system \
    --username app -path "$PATH" -- \
    gitdeploy run --scripts ./scripts/

Add Webhooks

To add a webhook you’ll first need a secret

with node.js:

crypto.randomBytes(16).toString("hex");

Then you’ll need to set up the webhook in your platform of choice.

Github

New Webhook: https://github.com/YOUR_ORG/YOUR_REPO/settings/hooks/new

Payload URL: https://YOUR_DOMAIN/api/webhooks/github
Content-Type: application/json
Secret: YOUR_SECRET
Which events would you like to trigger this webhook?
Just the `push` event.
Active: ✅

Bitbucket

Sometimes Bitbucket does not give you the option to specify the (X-Hub-Signature) secret, so you’ll have to append an access_token instead. Example:

Title: gitdeploy
URL: https://YOUR_DOMAIN/api/webhooks/bitbucket?access_token=YOUR_SECRET
Triggers: Repository push

Securing the Webook with HTTPS

I recommend using caddy to HTTPS:

gitdeploy.example.com {
    log {
        output stdout
        format console
    }
    encode gzip zstd
    reverse_proxy /* localhost:4483
}

How to Generate a Base64 Secret

in your browser:

(async function () {
  var rnd = new Uint8Array(16);
  await crypto.getRandomValues(rnd);
  var b64 = [].slice
    .apply(rnd)
    .map(function (ch) {
      return String.fromCharCode(ch);
    })
    .join("");
  var secret = btoa(b64)
    .replace(/\//g, "_")
    .replace(/\+/g, "-")
    .replace(/=/g, "");
  console.info(secret);
})();

with node.js:

crypto
  .randomBytes(16)
  .toString("base64")
  .replace(/\+/g, "-")
  .replace(/\//g, "_")
  .replace(/=/g, "");

License

Copyright 2020 The gitdeploy Authors

This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at https://mozilla.org/MPL/2.0/.