Add fly deployment action

.github/workflows/deploy-fly.yml

@@ -0,0 +1,21 @@
+name: Deploy to Fly
+
+on:
+  push:
+      branches: [main]
+
+env:
+  FLY_API_TOKEN: ${{ secrets.FLY_API_TOKEN }}
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout 
+        uses: actions/checkout@v2
+
+      - name: Setup Fly
+        uses: superfly/flyctl-actions/setup-flyctl@master
+      
+      - name: Deploy
+        run: flyctl deploy --remote-only

Dockerfile

@@ -20,4 +20,4 @@ FROM debian:bullseye-slim as run
 RUN apt-get update && apt-get -y install ca-certificates libc6
 COPY --from=build /app/target/release/grpc_banking_transactions_notifications /usr/local/bin/
 
-CMD grpc_banking_transactions_notifications --grpc-address "$GEYSER_GRPC_ADDRESS"
+CMD grpc_banking_transactions_notifications --grpc-address "$GEYSER_GRPC_ADDRESS" --rpc-url "$RPC_URL"