feat: added a test for running a simple cypress server

.github/workflows/tugboat.yml

@@ -48,10 +48,42 @@ jobs:
               target_url: "https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"
             });
 
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
           node-version: '14'
+      - name: fetch branch master
+        run: git fetch origin master
+
+      # Cache every node_modules folder inside the monorepo
+      - name: cache all node_modules
+        id: cache-modules
+        uses: actions/cache@v2
+        with:
+          path: '**/node_modules'
+          # We use both yarn.lock and package.json as cache keys to ensure that
+          # changes to local monorepo packages bust the cache.
+          key: ${{ runner.os }}-v${{ matrix.node-version }}-node_modules-${{ hashFiles('yarn.lock', '**/package.json') }}
+
+      # If we get a cache hit for node_modules, there's no need to bring in the global
+      # yarn cache or run yarn install, as all dependencies will be installed already.
+      - name: find location of global yarn cache
+        id: yarn-cache
+        if: steps.cache-modules.outputs.cache-hit != 'true'
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - name: cache global yarn cache
+        uses: actions/cache@v2
+        if: steps.cache-modules.outputs.cache-hit != 'true'
+        with:
+          path: ${{ steps.yarn-cache.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: yarn install
+        if: steps.cache-modules.outputs.cache-hit != 'true'
+        run: yarn install --frozen-lockfile
 
       # This is required because the environment_url param that Tugboat uses
       # to tell us where the preview is located isn't supported unless you
@@ -77,9 +109,12 @@ jobs:
             });
             console.log(result);
             return result.data.environment_url;
+
       - name: echo tugboat preview url
-        run: |
-          curl ${{steps.get-status-env.outputs.result}}
+        env:
+          BACKSTAGE_TEST_URL: ${{steps.get-status-env.outputs.result}}
+        run: yarn e2e-test cypress
+
       - name: set status
         if: ${{ failure() }}
         uses: actions/github-script@v3
@@ -94,6 +129,7 @@ jobs:
               context: 'Backstage Tugboat E2E Tests',
               target_url: "https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}"
             });
+            
       - name: set status
         if: ${{ success() }}
         uses: actions/github-script@v3