Add prod workflow

.github/workflows/deploy-prod.yml

@@ -0,0 +1,45 @@
+name: Docker Build & Push and Deploy to resell-prod
+
+on:
+  push:
+    branches: [release]
+  workflow_dispatch:
+
+jobs:
+  path-context:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Get SHA
+        id: vars
+        run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
+      - name: Docker Build & Push
+        uses: docker/build-push-action@v2
+        with:
+          context: ./
+          file: ./Dockerfile
+          push: true
+          tags: cornellappdev/resell-prod:${{ steps.vars.outputs.sha_short }}
+      - name: Remote SSH and Deploy
+        uses: appleboy/ssh-action@master
+        env:
+          IMAGE_TAG: ${{ steps.vars.outputs.sha_short }}
+        with:
+          host: ${{ secrets.PROD_SERVER_HOST }}
+          username: ${{ secrets.SERVER_USERNAME }}
+          key: ${{ secrets.PROD_SERVER_KEY }}
+          script: |
+            export IMAGE_TAG=${{ steps.vars.outputs.sha_short }}
+            cd docker-compose
+            docker stack rm the-stack
+            sleep 20s
+            docker stack deploy -c docker-compose.yml the-stack
+            docker system prune -a