add github actions

.github/actions/cache-bootstrap/action.yml

@@ -0,0 +1,31 @@
+name: cache-bootstrap
+description: Creates a cache with the given extension for lerna packages
+inputs:
+  extension:
+    description: Extension for cache name
+  partial:
+    description: Boolean flag to describe whether or not to run a partial bootstrap when finding cache
+    default: false
+runs:
+  using: composite
+  steps:
+    # for always overriding cache, use: pat-s/always-upload-cache@v2.1.5
+    - uses: actions/cache@v2
+      id: cache
+      with:
+        path: |
+          node_modules
+          */*/node_modules
+        key: ${{ runner.os }}-yarn-${{inputs.extension}}-v5-${{ hashFiles('**/yarn.lock') }}
+      # We want to only bootstrap and install if no cache is found.
+      # Futhermore, we might want to do a partial, hoisted, bootstrap towards
+      # the base branch if it exists, otherwise we choose develop for this.
+    - run: |
+        if [[ "${{steps.cache.outputs.cache-hit}}" != "true" ]]; then
+          yarn install --frozen-lockfile
+          yarn bootstrap --concurrency=2
+        elif [[ "${{inputs.partial}}" = "true" ]]; then
+          [[ ! -z "${GITHUB_BASE_REF}" ]] && ref="${GITHUB_BASE_REF#refs/heads/}" || ref="develop"
+          yarn bootstrap --npm-client=npm --hoist --since "origin/${ref}...HEAD" --concurrency=2 
+        fi
+      shell: bash

.github/workflows/action.yml

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+name: Medusa Pipeline
+on: [push, pull_request]
+
+jobs:
+  unit-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.5
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js environment
+        uses: actions/setup-node@v2.4.1
+        with:
+          node-version: "14"
+          cache: "yarn"
+
+      - name: Assert changed
+        run: ./scripts/assert-changed-files.sh "packages"
+
+      - name: Bootstrap packages
+        uses: ./.github/actions/cache-bootstrap
+        with:
+          extension: unit-tests
+          partial: true
+
+      - name: Run unit tests
+        run: node --max-old-space-size=2048 ./node_modules/.bin/jest -w 1
+
+  integration-tests:
+    runs-on: ubuntu-latest
+
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_USER: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2.3.5
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js environment
+        uses: actions/setup-node@v2.4.1
+        with:
+          node-version: "14"
+          cache: "yarn"
+
+      - name: Bootstrap packages
+        uses: ./.github/actions/cache-bootstrap
+        with:
+          extension: integration-tests
+
+      - name: Install dev cli
+        run: sudo npm i -g medusa-dev-cli
+
+      - name: Set path to medusa repo
+        run: medusa-dev --set-path-to-repo `pwd`
+
+      - name: Force install
+        run: medusa-dev --force-install
+        working-directory: integration-tests/api
+
+      - name: Build integration tests
+        run: yarn build
+        working-directory: integration-tests/api
+
+      - name: Run integration tests
+        run: yarn test
+        working-directory: integration-tests/api
+        env:
+          DB_PASSWORD: postgres