Ci automation

CI Automation

When to Use

• Running GitHub Actions workflows locally before pushing
• Creating or running project task recipes (build, test, deploy)
• Generating changelogs from conventional commit history
• Creating GitHub releases with auto-generated release notes
• Managing GitHub PRs, issues, or Actions runs programmatically
• Creating encrypted backups before destructive operations

Tools

Tool	Purpose	Structured output
gh	GitHub CLI — PRs, issues, releases, Actions, API	--json on most commands
just	Task runner with Makefile-like recipes (Justfile)	N/A (runs commands)
act	Run GitHub Actions workflows locally in Docker	Terminal output (mirrors Actions logs)
git-cliff	Generate changelogs from conventional commits	--output for file, stdout by default
restic	Encrypted incremental backups	--json for JSON status output

Patterns

Run a specific GitHub Actions job locally

act -j build

Run Actions with a specific event trigger

act push

Run Actions with secrets from .env file

act --secret-file .env -j test

List available Actions workflows and jobs

act -l

Run Actions with specific platform image

act -P ubuntu-latest=catthehacker/ubuntu:act-latest

Create a Justfile with common recipes

Create Justfile:

# List available recipes
default:
    @just --list

# Run tests
test:
    pytest -v

# Lint and format
lint:
    ruff check --fix .
    ruff format .

# Build and tag Docker image
build tag="latest":
    docker build -t myapp:{{tag}} .

# Deploy to staging
deploy-staging: test lint
    ./scripts/deploy.sh staging

Run a just recipe

just test

Run recipe with arguments

just build v1.2.3

List available recipes

just --list

Generate changelog for all history

git-cliff --output CHANGELOG.md

Generate changelog for latest release only

git-cliff --latest

Generate changelog since a specific tag

git-cliff --tag v1.0.0..HEAD

Generate changelog with custom config

git-cliff --config cliff.toml --output CHANGELOG.md

GitHub: Create a release with changelog

git-cliff --latest --strip header | gh release create v1.2.3 --notes-file -

GitHub: List open PRs as JSON

gh pr list --json number,title,author,createdAt

GitHub: Create a PR

gh pr create --title "feat: add new feature" --body "Description of changes"

GitHub: View Actions run status

gh run list --json status,name,conclusion --limit 10

GitHub: Re-run a failed Actions workflow

gh run rerun <run-id> --failed

GitHub: Create an issue

gh issue create --title "Bug: description" --body "Steps to reproduce..." --label bug

GitHub: Query the GitHub API directly

gh api repos/{owner}/{repo}/releases --jq '.[0:5] | .[].tag_name'

Restic: Initialize a backup repository

restic init --repo /path/to/backup

Restic: Create a backup

restic backup --repo /path/to/backup --json ./important-data

Restic: List snapshots

restic snapshots --repo /path/to/backup --json

Restic: Restore from backup

restic restore latest --repo /path/to/backup --target /path/to/restore

Pipelines

Generate changelog → create GitHub release

VERSION=$(git describe --tags --abbrev=0 2>/dev/null || echo "v0.1.0")
git-cliff --latest --strip header | gh release create "$VERSION" --notes-file - --title "$VERSION"

Each stage: git-cliff generates changelog for latest version, gh creates release with those notes.

Run local CI → create PR if passing

act -j test && act -j lint && gh pr create --title "feat: ready for review" --body "Local CI passed (test + lint)"

Each stage: act runs test job, act runs lint job, gh creates PR only if both pass.

Backup → deploy → verify

restic backup --repo /backup --json ./data && ./scripts/deploy.sh production && curl -sf https://myapp.com/health

Each stage: restic backs up current state, deploy script runs, curl verifies health endpoint.

List PRs → show CI status for each

gh pr list --json number,title,statusCheckRollup --jq '.[] | {pr: .number, title: .title, checks: [.statusCheckRollup[]? | {name: .name, status: .conclusion}]}'

Prefer Over

• Prefer just over make for task recipes — better syntax, built-in arguments, no tab sensitivity
• Prefer act over push-and-pray for CI debugging — test Actions locally before pushing
• Prefer git-cliff over manual changelog writing — auto-generated from conventional commits
• Prefer gh CLI over GitHub web UI for batch operations — scriptable, JSON output, faster

Do NOT Use When

• Simple git operations (commit, push, branch) — use git directly
• CI debugging that requires the exact GitHub runner environment — act uses Docker approximations
• One-time file copy — don't use restic for simple cp operations
• Project doesn't use conventional commits — git-cliff won't produce useful output