write to correct path - ci

.github/workflows/gcr.yaml

@@ -19,7 +19,7 @@ jobs:
       uses: actions/checkout@v2.3.4
     - name: Write Dashboard Environment Variables
       run: |
-        cat >/etc/myconfig.conf <<EOL
+        cat >./dashboard/.env <<EOL
         NODE_ENV=production
         API_SERVER=dashboard.getporter.dev
         FULLSTORY_ORG_ID=${{secrets.FULLSTORY_ORG_ID}}