add auto deploy to fly.io

.github/workflows/publish.yaml

@@ -5,6 +5,9 @@ on:
     branches:
       - main
 
+env:
+  FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+
 jobs:
   backend-tests:
     name: "Backend Server Tests"
@@ -14,6 +17,16 @@ jobs:
     name: "Frontend and End-to-End Tests"
     uses: hay-kot/homebox/.github/workflows/frontend.yaml@main
 
+  deploy:
+    runs-on: ubuntu-latest
+    needs:
+      - backend-tests
+      - frontend-tests
+    steps:
+      - uses: actions/checkout@v2
+      - uses: superfly/flyctl-actions/setup-flyctl@master
+      - run: flyctl deploy --remote-only
+
   publish:
     name: "Publish Nightly"
     needs: