build: Run build task inside Docker

.dockerignore

@@ -0,0 +1 @@
+node_modules

.github/workflows/ci.yaml

@@ -13,32 +13,4 @@ jobs:
     steps:
       - uses: actions/checkout@v2
 
-      - name: Cache node modules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
-        with:
-          path: ~/.npm # npm cache files are stored in `~/.npm` on Linux/macOS
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
-
-      - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v2
-        with:
-          node-version: ${{ matrix.node-version }}
-
-      - run: npm ci
-
-      - run: npm run build --if-present
-        env:
-          RELATIVE_CI_KEY: ${{ secrets.RELATIVE_CI_KEY }}
-          DEBUG: ${{ secrets.DEBUG }}
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v2
-        with:
-          name: artifacts
-          path: artifacts
+      - run: npm run container-build

Dockerfile

@@ -0,0 +1,18 @@
+from node:16 as base
+
+ARG CI=true
+ARG SERVICE="github-action-docker"
+ARG REPOSITORY
+ARG BRANCH
+ARG PR
+ARG BUILD
+ARG BUILD_URL
+ARG SHA
+
+COPY . /app
+WORKDIR /app
+
+from base as build
+
+RUN npm install
+RUN DEBUG=relative-ci:* npm run build

package.json

@@ -6,6 +6,7 @@
   "scripts": {
     "start": "webpack-dev-server",
     "build": "webpack --mode production --json artifacts/webpack-stats.json",
+    "container-build": "docker build . --no-cache-filter=build --progress=plain",
     "test": "echo \"Error: no test specified\" && exit 0"
   },
   "keywords": [],