ci: switch to GitHub Actions (api-platform#1261)

* ci: switch to GitHub Actions

* add token to retrieve contributors

Author: dunglas

.github/workflows/cd.yml

@@ -0,0 +1,49 @@
+name: Deploy Website
+
+on:
+  push:
+    branches:
+    - main
+    - '*.*'
+    - ci/github-actions
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout the website
+      uses: actions/checkout@v2
+      with:
+        repository: api-platform/website
+        ref: main
+
+    - name: Get yarn cache directory path
+      id: yarn-cache-dir-path
+      run: echo "::set-output name=dir::$(yarn cache dir)"
+
+    - uses: actions/cache@v2
+      id: yarn-cache
+      with:
+        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-
+
+    - name: Install deps
+      run: yarn install
+
+    - name: Retrieve docs
+      run: bin/retrieve-documentation
+
+    - name: Build website
+      env:
+        GITHUB_KEY: ${{ secrets.CONTRIBUTORS_GITHUB_TOKEN }}
+      run: yarn gatsby build
+
+    - name: Deploy
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./public
+        cname: api-platform.com

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: Lint
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Lint
+        uses: github/super-linter@v3
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: main
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Install Proselint
+        run: pip install --quiet --user proselint
+
+      - name: Run Proselint
+        run: find . -name '*.md' -exec proselint {} \;