chore: add workflow to test web server build (#1226)

.github/workflows/webserver.pr.yml

@@ -0,0 +1,20 @@
+name: Web Server PR
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - 'packages/web-server/**'
+
+jobs:
+  TestDockerBuild:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+      - name: Copy default configuration
+        run: yarn workspace @standardnotes/web-server run sample:env
+      - name: Test build of the image
+        run: docker build -t standardnotes/web:test-build .

packages/web-server/package.json

@@ -12,7 +12,8 @@
     "start": "bundle exec rails s -b 0.0.0.0",
     "start:no-binding": "bundle exec rails s",
     "copy:components": "cp -r ../../node_modules/@standardnotes/components-meta/dist/assets/. public/components/assets/",
-    "build": "bundle install && yarn copy:components && bundle exec rails assets:precompile"
+    "build": "bundle install && yarn copy:components && bundle exec rails assets:precompile",
+    "sample:env": "cp .env.sample .env"
   },
   "dependencies": {
     "@standardnotes/components-meta": "workspace:*",