CI workflow (9seconds/mtg)

The CI workflow from 9seconds/mtg, explained and optimized by Latchkey.

CI health: B - good

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Source: 9seconds/mtg.github/workflows/ci.yamlLicense MITView source

What it does

This is the CI workflow from the 9seconds/mtg repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

---

name: CI

permissions:
  actions: read
  checks: read
  contents: read
  deployments: read
  issues: read
  discussions: read
  pull-requests: read
  repository-projects: read
  security-events: read
  statuses: read

on:
  push:
    tags:
      - v*
    branches:
      - master
      - stable
      - v1
  release:
    types:
      - published
      - released
  pull_request:
    types:
      - opened
      - edited
      - reopened
      - synchronize
      - ready_for_review

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: jdx/mise-action@v3
        name: Install mise

      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Run tests
        run: mise tasks run covtest

      - name: Collect coverage
        uses: codecov/codecov-action@v5
        with:
          files: ./coverage.txt

  fuzz:
    name: Fuzzing
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: jdx/mise-action@v3
        name: Install mise

      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Run fuzzing
        run: mise tasks run 'test:fuzz:*'


  lint:
    name: Lint
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: jdx/mise-action@v3
        name: Install mise

      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Run linter
        run: mise tasks run lint

  artifacts:
    name: Build release artifacts
    runs-on: ubuntu-latest
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - uses: jdx/mise-action@v3
        name: Install mise

      - name: Cache Go modules
        uses: actions/cache@v5
        with:
          path: ~/go/pkg/mod
          key: ${{ runner.os }}-gomod-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-gomod-

      - name: Cache cross-compilation build
        uses: actions/cache@v5
        with:
          path: ~/.cache/go-build
          key: ${{ runner.os }}-goreleaser-${{ hashFiles('go.sum') }}-${{ hashFiles('**/*.go') }}
          restore-keys: |
            ${{ runner.os }}-goreleaser-${{ hashFiles('go.sum') }}-
            ${{ runner.os }}-goreleaser-

      - name: Run release
        run: mise tasks run release

  docker:
    name: Docker
    runs-on: ubuntu-latest
    timeout-minutes: 20
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive

      - name: Get Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            nineseconds/mtg
            ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=raw,value=latest,enable={{is_default_branch}}
            type=raw,value=master,enable=${{ github.ref == 'refs/heads/master' }}
            type=raw,value=stable,enable=${{ github.ref == 'refs/heads/stable' }}

      - name: Setup QEMU
        uses: docker/setup-qemu-action@v3

      - name: Setup BuildX
        uses: docker/setup-buildx-action@v3

      - name: Login to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}

      - name: Login to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          pull: true
          context: .
          platforms: linux/amd64,linux/arm64,linux/386,linux/arm/v7,linux/arm/v6
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

---
 
name: CI
 
permissions:
  actions: read
  checks: read
  contents: read
  deployments: read
  issues: read
  discussions: read
  pull-requests: read
  repository-projects: read
  security-events: read
  statuses: read
 
on:
  push:
    tags:
      - v*
    branches:
      - master
      - stable
      - v1
  release:
    types:
      - published
      - released
  pull_request:
    types:
      - opened
      - edited
      - reopened
      - synchronize
      - ready_for_review
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  test:
    name: Test
    runs-on: latchkey-small
    timeout-minutes: 10
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
 
      - uses: jdx/mise-action@v3
        name: Install mise
 
      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-
 
      - name: Run tests
        run: mise tasks run covtest
 
      - name: Collect coverage
        uses: codecov/codecov-action@v5
        with:
          files: ./coverage.txt
 
  fuzz:
    name: Fuzzing
    runs-on: latchkey-small
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
 
      - uses: jdx/mise-action@v3
        name: Install mise
 
      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-
 
      - name: Run fuzzing
        run: mise tasks run 'test:fuzz:*'
 
 
  lint:
    name: Lint
    runs-on: latchkey-small
    timeout-minutes: 5
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
 
      - uses: jdx/mise-action@v3
        name: Install mise
 
      - name: Cache Go modules and build
        uses: actions/cache@v5
        with:
          path: |
            ~/go/pkg/mod
            ~/.cache/go-build
          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-
 
      - name: Run linter
        run: mise tasks run lint
 
  artifacts:
    name: Build release artifacts
    runs-on: latchkey-small
    timeout-minutes: 20
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
 
      - uses: jdx/mise-action@v3
        name: Install mise
 
      - name: Cache Go modules
        uses: actions/cache@v5
        with:
          path: ~/go/pkg/mod
          key: ${{ runner.os }}-gomod-${{ hashFiles('go.sum') }}
          restore-keys: |
            ${{ runner.os }}-gomod-
 
      - name: Cache cross-compilation build
        uses: actions/cache@v5
        with:
          path: ~/.cache/go-build
          key: ${{ runner.os }}-goreleaser-${{ hashFiles('go.sum') }}-${{ hashFiles('**/*.go') }}
          restore-keys: |
            ${{ runner.os }}-goreleaser-${{ hashFiles('go.sum') }}-
            ${{ runner.os }}-goreleaser-
 
      - name: Run release
        run: mise tasks run release
 
  docker:
    name: Docker
    runs-on: latchkey-small
    timeout-minutes: 20
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          submodules: recursive
 
      - name: Get Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            nineseconds/mtg
            ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=raw,value=latest,enable={{is_default_branch}}
            type=raw,value=master,enable=${{ github.ref == 'refs/heads/master' }}
            type=raw,value=stable,enable=${{ github.ref == 'refs/heads/stable' }}
 
      - name: Setup QEMU
        uses: docker/setup-qemu-action@v3
 
      - name: Setup BuildX
        uses: docker/setup-buildx-action@v3
 
      - name: Login to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
      - name: Login to GitHub Container Registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
 
      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          pull: true
          context: .
          platforms: linux/amd64,linux/arm64,linux/386,linux/arm/v7,linux/arm/v6
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.

7 third-party actions are referenced by a movable tag. Pin them to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Container pulls and builds

This workflow runs 5 jobs per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/cache codecov/codecov-action docker/metadata-action docker/setup-qemu-action docker/setup-buildx-action docker/login-action docker/build-push-action