Example of workflow for monorepo with GitHub Action 📦

promote-dev-cool-project.yml

name: promote-dev-cool-package

on:
  push:
    paths:
      - packages/cool-package/**
    branches-ignore:
      - master
      - refs/tags/*

jobs:
  lint:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1

      - name: Install dependencies
        run: yarn install --frozen-lockfile

      - uses: actions/cache@v1
        with:
          path: ~/.cache/yarn
          key: ${{ runner.os }}-build-node-modules-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-build-node-modules
            ${{ runner.os }}-build-
            ${{ runner.os }}-

      - name: Run lint test
        run: echo "run lint test script"

  unit-test:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v1

      - name: Install dependencies
        run: yarn install --frozen-lockfile

      - uses: actions/cache@v1
        with:
          path: ~/.cache/yarn
          key: ${{ runner.os }}-build-node-modules-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ runner.os }}-build-node-modules
            ${{ runner.os }}-build-
            ${{ runner.os }}-

      - name: Run unit test
        run: echo "run unit test script"