CI: build website on PRs

The deploy-website.yml workflow packages the website. If this process
breaks, we don't know until we want to deploy the website.

Add a CI workflow which does most of the work of deploy-website.yml.

Keen readers will observe that build-website.yml does a lot more work
than deploy-website.yml. This is because deploy-website.yml is currently
broken. I'll fix it in a future commit.

Author: strager

.github/workflows/build-website.yml

@@ -0,0 +1,75 @@
+# Copyright (C) 2020  Matthew Glazar
+# See end of file for extended copyright information.
+
+name: build website
+on:
+  push:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  build:
+    name: website
+    runs-on: ubuntu-latest
+    container: ghcr.io/quick-lint/quick-lint-js-github-builder:v1
+    env:
+      QLJS_COLLECT_COPYRIGHT_NO_WARNINGS: 1
+    steps:
+      - uses: mymindstorm/setup-emsdk@v7
+        with:
+          version: 2.0.4
+      - name: checkout
+        uses: actions/checkout@v2
+
+      - name: C++ configure
+        run: emcmake cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS='-Os -flto' -DCMAKE_CXX_FLAGS='-Os -fno-rtti -fno-exceptions -flto'
+      - name: C++ build
+        run: emmake cmake --build build --target quick-lint-js-wasm-demo quick-lint-js-wasm-demo-licenses quick-lint-js-vscode quick-lint-js-vscode-licenses
+      - name: C++ install (web demo)
+        run: emmake cmake --install build --component wasm-demo --prefix website/public/demo
+      - name: C++ install (quick-lint-js-wasm)
+        run: emmake cmake --install build --component vscode --prefix wasm
+
+      - name: JS configure
+        run: cd website && yarn
+      - name: JS test
+        run: cd website && yarn test demo/test-demo.mjs
+
+      - name: build site
+        run: cd website && yarn build
+      - name: bundle site
+        run: cd website && zip -r ../website.zip www
+
+      - name: upload build to workflow
+        uses: actions/upload-artifact@v2
+        with:
+          if-no-files-found: error
+          name: website-${{ github.sha }}
+          path: website/www/
+      - name: upload build to long-term storage
+        if: ${{ github.event_name == 'push' }}
+        uses: quick-lint/sftp-upload@master
+        with:
+          host: ${{ secrets.artifacts_host }}
+          local-file-globs: website.zip
+          private-key: ${{ secrets.artifacts_key }}
+          remote-directory: ${{ secrets.artifacts_root }}/builds/${{ github.sha }}/website/
+          user: ${{ secrets.artifacts_user }}
+
+# quick-lint-js finds bugs in JavaScript programs.
+# Copyright (C) 2020  Matthew Glazar
+#
+# This file is part of quick-lint-js.
+#
+# quick-lint-js is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# quick-lint-js is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with quick-lint-js.  If not, see <https://www.gnu.org/licenses/>.